

It’s the year 2020, and Mizuho is having the worst 17th birthday ever. Her parents forgot it’s her birthday, she still can’t seem to get close to the senior she likes, and all her school trips and tournaments are canceled thanks to a new disease going around. She’s convinced she’ll never have the kind of youth she’s always dreamt of…until her childhood friend, Kizuki, suddenly asks her out.
![Official Trailer [Subtitled]](https://img.youtube.com/vi/qNid7YYHeRQ/hqdefault.jpg)

Jan 10, 2025 - 24m
July 1st, 2030. Manga editor Nishino Mizuho is having the worst 27th birthday ever. The manga she’s in charge of will be ending. However, when she sees a group of high school students having fun, she recalls her own adolescence. 10 years ago, during her second year of high school, Mizuho had four childhood friends who she grew up with in a residential neighborhood known as Koigahama Highlands…

Jan 17, 2025 - 24m
Kizuki, who Mizuho saw as the crybaby little brother of the group, has lately been hitting on her. Since Mizuho believed her and Kizuki would be childhood friends forever, she is not sure how to approach this situation. He's on her mind to the point where she seems disoriented, and even says something that could potentially push Kizuki away.

Jan 24, 2025 - 24m
Afraid of ruining their relationship, Mizuho tells herself not to fall for Kizuki. All the stress makes her ill, and her friends come to help.

Jan 31, 2025 - 24m
After spending the day at the aquarium, Kizuki asks Mizuho to cheer for him at his swim meet.

Feb 7, 2025 - 24m
As the fireworks are set off, Mizuho rushes to look for Kizuki. At the pool she runs into...?

Feb 14, 2025 - 24m
Mizuho is reluctant to visit Kizuki's house for dinner while her dad is away.

Feb 21, 2025 - 24m
Shugo's older brother, Togo, makes a surprise return to Koigahama Highlands.

Feb 28, 2025 - 24m
Mizuho goes out with Shugo and Togo and strongly contemplates her feelings for Kizuki.

Mar 7, 2025 - 24m
Shin steps up as the student council president to ensure the Ao High Festival can be held.

Mar 14, 2025 - 24m
The group goes on a camping trip! Airu tells Shin to be more selfish and he follows his suggestion.

Mar 21, 2025 - 24m
Mizuho starts becoming aware of Shin's intentions after he kissed her at the campsite.

Mar 28, 2025 - 24m
Shin and Kizuki compete over Mizuho. Meanwhile she finds out the results of the Newcomers' Manga Competition.

Jan 9, 2026 - 24m
The year is 2030. Mizuho hasn't heard from Kizuki in years. But at the fireworks festival, she bumps into...?

Jan 16, 2026 - 24m
Mizuho reminisces the day her and Kizuki started dating. Shin approaches Mizuho with his feelings once more.

Jan 23, 2026 - 24m
Airu takes a chance and confesses his feelings to Kizuki and his delinquent past is revealed.

Jan 30, 2026 - 24m
Mizuho believes her relationship with her friends could fall apart due to her dating Kizuki. However...

Feb 6, 2026 - 24m
The seniors graduate and celebrate their last day at the pool, leaving behind heartfelt messages.

Feb 13, 2026 - 24m
After a fight breaks out with Syugo and Kizuki, the friend group reunites for the first time in years.

Feb 20, 2026 - 24m
Kizuki finally brings to light an incident from the past that caused him to break things off with Mizuho.

Feb 27, 2026 - 24m
Airu reminisces the times he had feelings for Kizuki. Syugo's family restaurant faces uncertainty.

Mar 6, 2026 - 24m
Kizuki quits his job to pursue swimming. Meanwhile, Shin is out with a fever and Mizuho pays him a visit.

Mar 13, 2026 - 24m
Syugo and Mizuho spend their day together in Enoshima. Will Syugo finally confess or end with regret?

Mar 20, 2026 - 24m
Shin successfully performs surgery on Mizuho's dad. Can he finally prove to Mizuho that he can make her happy?

Mar 27, 2026 - 23m
After Shin's proposal, Mizuho makes a decision and goes to the pool to have a heart to heart with Kizuki.