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.
I'm Hihi! What are you doing
teaching Yumi, you thieving cat!
أنا هيهي! من سمح لك بتدريب
!يومي أيّها القط اللص
Ich bin Hihi! Und was gibst du dich einfach
als Yumis Trainer aus, du diebische Elster?!
¡Hihi! ¿Qué haces 
entrenando a Yumi, buitre?
¡Hihi! ¿Qué haces
entrenando a Yumi, buitre?
Gorillet ! Qui t’a autorisé
à entraîner Yumi, sale voleur ?
Sono Hihi!
Eu sou o Hihi! O que você está
ensinando para a Yumi, gato ladrão!
Я Хихи! Чему это ты там 
учишь Юми, кот-воришка?