Ever since Hihi, the youkai, learned tennis from a human, he's been enraptured. An athlete he trained even reached fourth in the world. Bored with training monkeys to play, Hihi decides to train an athlete to win the gold medal at the next Olympic games. Excited, he heads into town and runs across Mana's friend Yuumi. The two hit it off, and right away start intense daily training, but soon crack begin to appear in their relationship.
To bend with the times,
or to stand by your beliefs...
،الاتسام بالمرونة مع الزمن
...أو الثبوت على معتقداتك
Soll man sich der Zeit anpassen? Oder seinen Idealen treu bleiben?
O te adaptas a la actualidad 
o mantienes tu filosofía.
O te adaptas a la actualidad
o mantienes tu filosofía.
À toi de t’y plier
ou de rester fidèle à toi-même.
Vivere conformandosi alle tendenze attuali...
Ceder por causa do tempo,
ou ficar firme nas suas crenças...
Идти в ногу со временем 
или придерживаться своих убеждений...