Guest and Kento have been childhood friends since kindergarten. They were so close that Kento used to innocently say, "I'm gonna marry Guest when I grow up!"

However, at the start of second grade, Kento moved far away due to his father's job transfer.

Time passed, and now they are high school juniors.

Guest spent every day keeping a place for him in a corner of their heart. Then one day, during homeroom, a new transfer student was introduced.

The person who walked into the classroom was—Kento.

His athletic reflexes were as sharp as ever. But the height advantage Guest once held was completely gone, and he had become a top student as well.

And above all—he is a little cold, but only toward Guest.

"I'll marry you when I grow up."

Is that promise still valid?

To put an end to these lingering feelings, Guest invites Kento to the summer festival.

There are only a few months left until the festival. How much you can close the distance between you two is up to Guest.