How I Attended An All-Guys' Mixer Volume 4 by Nana Aokawa

It's time for some summer loving, as the gang deal with a flurry of feelings and some big relationship changes! Hagi finally plucks up the courage to ask Kohaku to the summer festival. Desperate to stop the pair from falling into a misunderstanding, the rest of the group keep watch from afar... but even their watchful eyes can't account for everything! And there's more than the usual fireworks in store when a glimpse of Kohaku in a yukata sends Hagi's heart ablaze, and his head spinning! Meanwhile, Suo pushes herself too hard and winds up under the weather - giving Tokiwa the perfect chance to step up and show how much he cares.