Even though her body has an unusual ability, Kunimi Riko is still (trying to be) a normal high school girl. One day, a guy suddenly comes to see her. He”s Tachibana Ran, the heir of the world-leading super-millionaire Tachibana family! A high tension romance between Ran, who suddenly proposed, and Riko, who turned him down.

Extra:

• Jigoku Kokyuu no Hitsuyou (Vol.1)
  Kiyoharu was trying to nap when a girl kissed him because she thought he was dead. He later learns that Touko, the girl, is always kissing someone in response to not being able to breathe and feeling suffocated.

• Fureru Ondo (Vol.2)
  Kashuu hates being touched because of his past experiences. He will only let Sayuri-sensei, the biology teacher, treat his wounds. To him, Sayuri-sensei's touch is precise and practical without bring up bad memories