Yuri lives with her big brother, Hayato. Though she looks like a model student in public, in reality she likes to laze around at home and play video games. Though they sometimes argue, she loves her big brother. As Hayato accepts another game challenge from Yuri, so begins his trouble-filled days...

Yuri lives with her big brother, Hayato. Though she looks like a model student in public, in reality she likes to laze around at home and play video games. Though they sometimes argue, she loves her big brother. As Hayato accepts another game challenge from Yuri, so begins his trouble-filled days...