One Good Turn Deserves Another

Shūrei, Tan-tan,and Seiga-kun all pitch in to help the other joukan in getting jobs. While doing this Shūrei decovers a horde of peach colored books, aka porn, that the other joukan had hidden. Later she asks Seiran if he has any peach colored books, since Tan-tan had said earlier that even Seiran would have some.

Synopsis excerpt via Kitsu.