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?!
It's a black opal ring.
إنّه خاتم أوبال أسود
Ein schwarzer Opalring.
Es un anillo de ópalo negro.
Es un anillo de ópalo negro.
È un anello di opale nero.
Um anel de opala preta.
Кольцо с чёрным опалом.