A day of joy, unexpected...

An eventful birthday celebration for Saku [yellow] brings the whole group closer together, as presents and fond memories are shared. With the end of summer vacation looming, Rintaro [gray] sets his sights on his next cake: one celebrating all Kaoruko [yellow] has accomplished in a particularly busy season. The couple meets for one last date before school is back in session, but a surprise visitor quickly throws a wrench in their plans...