In order to make a teacher (whose face she can't even remember anymore) fall for her,

Toudou Itsumi spiked a sports drink with her love potion.

However, someone else drank it by mistake.

Ookado Tsubasa

And it was none other than the class' "prince",

Ookado Tsubasa,

That fell head over heels for her.

Now

She's trying to force herself on Itsumi in the shower.