' Would you like to try that 'kissing in order to confirm' thing with me? '

Shu and Hiroto are best friends who are famous at their high school. Shu should have been having fun every day since middle school, having fun and playing around with each other, but lately, Shu notices that Hiroto's adult-like behavor, which he only shows to him, is making his heart flutter.

Is this love? Or friendship? In order to confirm that feeling,they decide to try kissing each other once a day for a week. Unlike Shu, who can't help but feel embarrassed, Hiroto seems to be enjoying this situation somehow!?

Lovey-dovey all-boys high school romance between a single-minded, phlegmatic Kuudere and an upbeat pure boy!