The story revolves around a girl named Rima Echizen, daughter of the famous 'Samurai In the tennis world' and sister of the recently famous chibi freshman Ryoma. Being related to two geniuses, she certainly does not fall short but an incident hinders her and keeps her away from her sport for a while. Soon after, she returns...but not yet completely? Join her as she struggles to regain what she has lost while also meeting generous amount of friends and possible love Interests...

Echizen Roko is Ryoma's twin brother. He's intelligent, stubborn, rude and mute. So what happens when the Echizen twins finally separate, and Roko chooses to go to Rikkaidai?