Summer vacation is a goddamn nightmare, especially when your childhood sweetheart is surrounded by wolves. Let's be real, Natsuiro is basically a cuckold simulator. Pure love warriors, there's still time to quit. Want to unlock all CGs? Then you gotta time every single NTR moment down to the hour. I spent three whole weeks trial-and-erroring, stepped on every landmine, and finally figured out all the ways Suzuka gets stolen. This guide doesn't waste time with bullshit—I'll tell you exactly when to sleep through it, when to rush over for the catch-in-the-act scene, how to use your phone, how to avoid the festival, and which choices matter despite seeming meaningless. I've highlighted all the key events. Follow my rhythm and you'll unlock all routes before August 31st, or come back and curse me out.
1. Game Core Mechanics & Survival Rules
2. Prologue: First Day of Summer Vacation
3. Oyama Route: Main Cuckold Battlefield
4. Nobuo Route: Secret Base Trap
5. Masamaru Route: School Bully Redemption
6. Daisuke Route: Workplace NTR Scene
7. Homeless Guy Route: Secrets in the Park
8. Yasui Route: Club Drug Party
9. Saki Route: CGs on the Fridge
10. Complete CG Collection & Time Management
11. Essential Beginner Pitfall Guide
1. Game Core Mechanics & Survival Rules
Natsuiro has one iron rule: time. You only have July 20 to August 31—42 days total. The in-game time flow is weird AF. Some events eat up whole days, others just a few hours. You MUST check Suzuka's notes daily with W. August 28th is the major branching point, and the 31st forces the ending.
You can only use your phone three times per day. Press Q to check Suzuka's current location—this is your essential cuck-catching tool. Once you see Suzuka's location shows Shrine or Oyama's house, bro, prepare for a broken heart. The tent exclamation mark gives panty CG, phone booth gives the phone—these are must-get items early game.
The village map has three areas: Iki Village itself, the town, and the city. The teleport array is in the village center, looks like a magic circle—late-game map unlocking depends entirely on it. All NTR events have prerequisite favorability. Suzuka's affection for Oyama goes from 0 to 100, and you can watch that progress bar climb helplessly, unable to stop it.
2. Prologue: First Day of Summer Vacation

Treat that light music at game start as a lullaby. The focus is on the beach monologue. The background is laid out clearly: you only have one summer vacation, and must choose different endings for Suzuka. Don't skip the tutorial here—it teaches basic controls.
Go to school first—it's at the far left edge of the map. First meeting Suzuka at the gym basketball court, the system deliberately brainwashes you, calling her cool. When eavesdropping on conversations, choose whatever—it doesn't affect the main story, but建议选择 expressing concern to give Suzuka a higher favorability base later.
After getting the phone, go to the tent immediately to find Nobuo. Here you'll unlock the first panty CG. Nobuo's story clearly tells you there are only two girls with CGs in the village: Suzuka and Saki. Oyama first appears at the warehouse entrance. Suzuka's dragon strike looks satisfying, but it's actually the start of Oyama's route.
The warehouse incident is the prologue climax. The door is locked, Suzuka and Oyama are tangled inside for ten minutes. The system plays ghost sounds, telling you to watch for her changes, and if you don't want to be NTR'd, keep her by your side. Bullshit—the door's locked, what can I do? After ten minutes Suzuka comes out, obviously not right. At this point, her infidelity progress bar has already silently increased by 15%.
3. Oyama Route: Main Cuckold Battlefield
Oyama route is the default main route—you'll trigger it even if you don't want to. Key nodes start July 23rd, guaranteed incidents every afternoon from 2-4 PM.
1. Trigger condition: Talk to Oyama, then talk to the village chief to hear about the festival. That bastard chief will tell you about the village's ancient customs—three days of camp, three days of festival—makes your scalp tingle just hearing it.
2. July 25th first critical event: Suzuka actively seeks out Oyama. Conversation content leaks through special channels. She asks Oyama if she can skip the festival. Oyama says tradition can't be violated. Whatever you choose here is useless, lying is useless—the system has already determined Suzuka's heart is wavering.
3. July 28 to August 1, five consecutive days Suzuka finds Oyama daily, from picking clothes to leaving in pajamas. Open menu to check Suzuka's status—her love interest has already changed to Oyama. Location check shows she didn't go to sports club at all, heading straight to the shrine.
4. August 8th night is the ultimate NTR event. You come home from work to find the door locked, Suzuka and Oyama tangled inside. You sleep in the park one night, next morning get a text from Suzuka—content speaks for itself. From this day, CG collection enters garbage time.
5. August 15th Suzuka's birthday—this is Oyama route's last CG. Take the lamp to the beach, find Suzuka and Oyama talking by the sea. Come back and sleep straight to August 28th. Resort confession section, both options are the same—Suzuka will explicitly reject you. Years later ending: ten years later Suzuka and Oyama hold a wedding in the village, and you're just a background character.
4. Nobuo Route: Secret Base Trap
Nobuo route unlock is brutally simple—go to the secret base on Wednesdays and Fridays to ambush him. First visit July 22nd, Nobuo will make you play cards. Rule is you must lose three times. Each loss, they go into the tent once.
1. First loss—CG unlocks automatically. Nobuo's accomplice will stand guard outside, trigger a warning if you approach.
2. Before second loss, go home first to trigger Suzuka memory scene—she'll ask what you think of Nobuo. Whatever you answer doesn't affect her jumping into the fire pit.
3. After third loss, Nobuo route officially ends. Later around August 10th you'll get a text from Nobuo saying Suzuka visited the secret base. Use Q key to check location—Suzuka will stay at the base for three hours, you can only listen outside the door.
Nobuo route total duration is five days max, but will permanently increase Suzuka's openness attribute, indirectly affecting Oyama route trigger frequency. So recommend either finish first week or don't touch it at all.
5. Masamaru Route: School Bully Redemption

Masamaru route is the only side route that can reduce Suzuka's NTR probability, but the price is watching Masamaru get cucked. July 24th go to bathhouse to talk to Masamaru and learn he's being bullied at school.
1. After bathhouse event, go to school classroom, sit in chair and choose self-study—triggers new homeless guy NTR plot. Masamaru route will split some of Suzuka's time, reducing her contact opportunities with Oyama.
2. Time advances to July 29th, Masamaru will invite Suzuka to the city to relax. Going to the city consumes a whole day, but Suzuka's favorability toward Oyama decreases by 5. This is the only favorability reduction event in the entire game.
3. Masamaru route ending around August 20th, Suzuka will tell you Masamaru transferred schools. If Masamaru favorability is high enough, you'll unlock a CG of Suzuka comforting Masamaru—this CG is pure love oriented, must-get for collectors.
Walking Masamaru route has a side effect: Oyama gets jealous,反而 accelerating his speed of stealing Suzuka. So this route is double-edged sword. Recommend for second playthrough.
6. Daisuke Route: Workplace NTR Scene
Daisuke route is speedrun route—triggered by working at the town shop on Tuesday July 26th. Daisuke, this blonde bastard, will directly hit on Suzuka with god-tier efficiency.
1. After work event, bring Daisuke home—choices don't matter. 建议选择 later generations surpass former ones, give an inch take a mile, and arrogant/conceited options—can accelerate Daisuke's route progress.
2. Same day at 5 PM, see Suzuka and Daisuke in the village, go join the fun. Two choices are useless—Suzuka is already interested in Daisuke.
3. Daisuke route total duration three days, ends August 1st. After ending Suzuka will tell you Daisuke left town, but a selfie CG of Daisuke remains in phone. This route doesn't affect main route ending, but will consume three precious days of Suzuka's time.
Daisuke route suits players who want quick NTR scenes. Can walk it in first playthrough, losses are minimal anyway.
7. Homeless Guy Route: Secrets in the Park
All of Saki's CG scenes are posted on the fridge—this copywriting design is wild enough. Homeless guy route unlock requires Sunday and Wednesday as key days.
1. Saki goes to volunteer on Mondays and Wednesdays, location is the park. Park entrance is bottom right of map—if can't find, just drag time to Wednesday.
2. Saki only appears after midnight 0:00—be patient and go to park at late night. You'll see a group of homeless guys surrounding Saki, triggering the event.
3. Homeless guy asks if you're worried about Saki—choosing No increases favorability by 10. Wednesday morning, chat with Saki at home. She'll say she was asked a favor by someone she knows.
4. Sunday Saki waits for you in the park, drenched in sweat, triggering the final event. This plot is painful to watch—Saki is willing, you can't stop her. Afterwards, you can come every Wednesday and Sunday to see repeat CGs.
Homeless guy route has 5 CGs total, unrelated to main story—collectors can do it last.
8. Yasui Route: Club Drug Party

Yasui route is trap within a trap—triggered by talking to bar owner Wednesday July 27th. Owner will make you go to city club for mixer party.
1. City is where darkness gathers—going means falling into trap. Girls in club will seduce you, then drug you. You wake up lying outside. Don't ask what happened during that period.
2. After being drugged, you'll have uneasiness that lasts three days. Saturday afternoon school teacher comes to you, says you XX female classmate—choices don't matter, teacher makes you drop out.
3. Yasui route ends here. Suzuka will comfort you, but Oyama favorability +10. This route purely exists to screw players over, recommend not playing unless you want to see protagonist get framed plot.
9. Saki Route: CGs on the Fridge
Saki is a hidden character—all her CG hints are on your fridge. July 30th morning, talk to Saki to learn she volunteers on Mondays and Wednesdays.
1. Saki's main CG scenes are posted on fridge, including park, school, and shrine. Road to park is long—recommend dragging to Wednesday before going.
2. Park event already covered in homeless guy route—Saki and the homeless group scene. Wednesday morning, find her at home and talk to trigger final CG.
3. Saki route has two special CGs: one for mixer party, one for shrine. Shrine one requires Oyama route progress past August 10th to unlock—it's a hidden event between Saki and Oyama.
10. Complete CG Collection & Time Management
Total CGs: 47. Suzuka has 32 exclusive ones, other characters have 15. Time management is core—here are the iron rules.
1. July 20 to August 5 is golden collection period—during this time Suzuka's favorability toward Oyama is low, you can walk all side routes once.
2. After August 6th, Oyama route enters forced stage—must go to Oyama's house every afternoon to camp, or you'll miss CGs. After August 10th, CG repetition rate is high, new CGs only for birthday and festival.
3. Festival is August 20-22, three days. During festival Suzuka's location is locked at shrine—you can't enter, can only wait for her at beach. Post-festival conversation determines whether you enter true ending.
4. True ending unlock conditions: Walk Oyama route to August 28th, get rejected in confession, choose "wait longer," then sleep to 31st. Triggers ten-year reunion easter egg—Suzuka divorces, you two reconnect.
11. Essential Beginner Pitfall Guide

Finally, key points for newbies—this game has tons of traps.
1. Don't trust choices—90% of options don't affect ending. Key is time management and event trigger order. Oyama route is destined to cuck you—system forced.
2. Don't waste phone's three daily uses. Focus on checking Suzuka's location after August 6th. Seeing shrine means go camp at entrance immediately—you can hear voice acting.
3. Talk to all shops and NPCs—some CG triggers depend on conversation count. Especially bathhouse lady—talk 10 times for hidden CG.
4. Save timing: MUST save before sleeping every day, MUST save before choices. Game has no New Game+ inheritance, but has event list to check which CG you missed.
5. Sensitive word censors: In-game XX, XX etc. are system censorship—don't think it's the translation team's fault. I also used XX in guide for review approval.
6. Keep mental state stable—this is an NTR game, not pure love. Want pure love route? Doesn't exist. Developer deliberately designed it—you can only choose how you get cucked.
Alright, that's the complete Natsuiro full walkthrough. Every character's route timing, CG unlock conditions, event trigger locations are written crystal clear. Recommend first playthrough to push blindly yourself, experience getting cucked. Second playthrough use this guide to fill gaps. Questions? Ask in comments, I reply when I see them. This game is basically a test of time management and cuckold acceptance tolerance. Have fun playing.

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