As summer comes to an end, Hase comes to visit. But Akine says that Yushi's training isn't hard enough, and asks the landlord to make... a waterfall?!
There're some things only you know,
هناك أشياء تعرفها وحدك
Es gibt sicher Dinge,
die man nur selbst weiß,
Hay cosas que solo tú conoces,
Hay cosas que solo tú conoces,
J’ai des facettes
que je suis le seul à voir,
Certo, ci saranno degli aspetti 
che solo noi possiamo conoscere,
Certas coisas só a gente sabe,
Кое-что можешь знать только ты,