"I am not speaking of likes or dislikes... only facts."

Tsukatsuki Rio (調月リオ, Tsukatsuki Rio) is one of the students studying at Millennium Science School who wields a Handgun.

She is the president of Seminar, and is the main antagonist of the second half of Volume 2, and later a supporting character on Volumes Final and EX.

Scenarios:

1- First Meeting

2- Socially Awkward

3- Rio vs... a washing machine?

4- Pampered until her heart's content

5- Create your own scenario