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.
That Yumi girl is quite the tough nut.
.هذه الفتاة تملك عزيمة كبيرة
Aber ich muss schon sagen,
diese Yumi ist schon überaus zäh.
Esa tal Yumi es perseverante.
Esa tal Yumi es perseverante.
C’est un sacré personnage,
cette Yumi.
Comunque quella ragazza di nome Yumi è gagliarda...
Essa Yumi é bem resistente.
И всё же упёртости Юми 
следует позавидовать.