Yūgo Takao

When GUTS-Select investigate mysterious disappearances, they learn it is work of an evil alien who intends to invade the Earth, called Professor Gibellus. However, just in time, a mysterious woman appears to help GUTS-Select.

Three hopeless romantics find themselves head over heels for the charming and mysterious Kita-kun, forming a pact to share his love equally between them.