S1, E1: 170 cm tall Koizumi Lisa and 156 cm short Ōtani Atsushi have been quarelling ever since they entered Maido Academy, to the point that their feud is compared to the Tigers-Giants rivalry. Lisa had falled for Suzuki Ryouji at first sight, Ōtani had a crush on Lisa's friend Tanaka Chiharu, so he arranges a merry triple date. However, they both get rejected because of their complexes about their tallness and shortness, respectively. In the end, Suzuki and Chiharu discover they have feelings for each other... On the other hand, Lisa and Ōtani discover that they essentially have the same complex and start a of who can get a partner first.