Similar to many college students in Japan, Suekichi prioritizes his pastimes alongside his studies. However, his regular life is thrown off course when he participates in his great grandfather's funeral and arises the next day beside an enticing lady. Along with a modest inheritance, Suekichi acquires a condition from his great grandfather's will. Further adding to the fascination, Aya stays close by his side. This marks the start of their strange bond, founded on both attraction and doubt.