Following an eventful class trip, Rintaro just about returns to his daily routine when a surprise visit from his older brother throws a wrench in the works.

Fortunately, the advice he receives as a parting gift helps him get just a little closer to Kaoruko.

But as the couple’s relationship deepens, a figure from Rintaro’s past makes a fateful appearance—and she may not be able to keep a lid on her feelings…