Hase is spending the night at the yokai apartment.  He learns more about the people of the apartment, and about the differences between humans and yokai.
His teaching style is clear, and I guess 
he seems serious or smart, but...
لكنّ أسلوب تعليمه واضح
und er macht einen ernsten,
intelligenten Eindruck, aber …
pero explica con claridad,
pero explica con claridad,
ses méthodes sont bien rodées,
et on sent qu’il en a dans le crâne…
e sì, è molto serio,
Tem um estilo claro de ensino, 
parece sério e inteligente, mas...
Он довольно понятно объясняет, 
сам кажется серьёзным или умным, но...