Akitoshi Arikawa is a university student living independently away from parents.
His step big sister Midori one day requests him to take care of his step
little sister Ichigo’s study, because Midori is anxious about Ichigo’s bad grades.
He is happy to accept Midori’s request thinking it’d be good chance to catch up with Ichigo, but…
Ichigo’s academic abilities are far lower than his expectation.
“I don’t wanna study. Please teach me sex ed instead, oniichan.”
Placed before Ichigo’s lustful approach, the very last remaining fragment of reason,
While they are in a stuck because Akitoshi can’t overcome his sexual drive,