Mikoto to Rei

Mikoto, the free-spirited gal, and Rei, the serious student council member.
Rei is completely at the mercy of the free-spirited Mikoto…!?
But it seems like she doesn’t mind it all that much.
Take a peek into the cute—and slightly naughty—daily lives of these two?

(Source: Kadokawa, translated)

Note: Includes one extra chapter.