The wallflower / Hayakawa, Tomoko

As the pressure grows for the four boys to turn Sunako into a lady in exchange for free rent, they discover that Sunako has been spending a lot of her time in the science room with a strange teacher. Kyohei decides it is time to make up his mind which he wants more: free rent or Sunako's love.

When Kyohei kisses her, Sunako interprets it as harrassment and puts a curse on Kyohei that makes him seriously ill. The only thing that can break the curse is a kiss from Sunako, but for that to happen, Sunako would have to finally admit she cares about him.

Sunako just wants to remain in seclusion inside her dark room, but her aunt has other plans and takes her to a party where she seeks refuge in an empty coffin.

Sunako shocks her roomies by going with some girls from school to shop for cosplay supplies for the upcoming school festival; however, she didn't expect that it would turn into a full-day event of shopping, karaoke, and girl-stuff.

Kyohei's friends convince him to take Sunako out on her first date, but in order to get Sunako to agree, Kyohei must take her to a pro-wrestling death match and try to keep her from realizing it is a real date.

Realizing that no progress has been made in turning Sunako into a lady, her aunt arranges for a little romantic getaway for Sunako and Kyohei.

When Sunako rejects Kyohei for being too good-looking, he runs away, and only Sunako, racked with guilt, knows what is going on and can go to find him, but Sunako, a creature of darkness is reluctant to face the light in order to bring Kyohei home again.

Sunako sneaks away from the four college boys who are in charge of turning her into a proper lady, and meets up with the old woman who runs Granny's Museum of Horrors to collect more gruesome artifacts, but when she tries to bring them into the house, the boys declare all-out war.

A young toddler named Rin shows up calling Ranmaru "Daddy, " but Sunako seems to have a soft spot for the boy.

Four friends are in danger of losing their free rent in a large mansion if they don't follow through with their agreement to turn Sunako into a lady.