In the story, Saku Ōyagi is a quiet bookworm who moves back his former
hometown as a high school freshman. He meets his childhood friend,
Mihoshi Akeno, again, although an traumatic incident long ago had left
their relationship in a awkward state of dread and high tension.
However, Mihoshi brings Saku into the astronomy club she founded, and
this sets the stage for the slapstick romantic comedy that ensues.