Hiyakeato

ひやけあと Hiyakeato
Moruma Ashina got a job and returned to his hometown.
When she is swimming in a public pool, she is asked by a staff member to be a temporary instructor for a swimming class.
This swimming class is a memorable class that Morima was indebted to in the past.
So, she answered OK with two replies, and there was the figure of Harumi Tose, her junior at the time, whom she was very attached to.

Morima is attacked by her junior whom he hasn’t seen in a long time.
And when she returns to her parents’ house, her father’s remarriage partner’s child, “Hamaoka Shinaki”, tries to have extreme physical contact.
I was surprised because I thought she was a taciturn and quiet girl.

Furthermore, when she leaves the house, she is waited for by a girl named Kanon Nago.
Morima is perplexed because this child also has excessive physical contact.
From what I heard, this group of three good friends had created something called the “Ladies Alliance” around Morima. 
The rule is that all three are embraced by Morima, and then one of them is chosen…
In response to the confessions from the three girls with dazzling gradations after sunburn, Morima…?