AGUNG INC.

Former college buddies Horaguchi and Okawa suddenly reunite on a whim after 15 years apart and try to resume their friendship by planning a trip together. Meanwhile, Okawa’s live-in girlfriend Kaede and the pair's old friend Kyoko get roped into joining them. Soon, the four head off on a trip together with the goal of sharing sukiyaki by the sea.

Utsumi and Seto's daily routine is to spend their afterschool hours just jabbering with one another along a riverbed. Getting excited over trivial word play, agonizing over the content of an email to be sent to a girl, and, at times, talking about a serious problem, the two endlessly engage in meaningless idle talk as if it were meaningful.