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.

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.

After spending the day at the aquarium, Kizuki asks Mizuho to cheer for him at his swim meet.

As the fireworks are set off, Mizuho rushes to look for Kizuki. At the pool she runs into...?

Mizuho is reluctant to visit Kizuki's house for dinner while her dad is away.

Shugo's older brother, Togo, makes a surprise return to Koigahama Highlands.

Mizuho goes out with Shugo and Togo and strongly contemplates her feelings for Kizuki.

Shin steps up as the student council president to ensure the Ao High Festival can be held.

The group goes on a camping trip! Airu tells Shin to be more selfish and he follows his suggestion.

Mizuho starts becoming aware of Shin's intentions after he kissed her at the campsite.

Shin and Kizuki compete over Mizuho. Meanwhile she finds out the results of the Newcomers' Manga Competition.