Keiki's investigation reveals that the senpai he looks up to is a huge pervert, but it doesn't stop him from pushing forward. There are other suspects to interrogate! He approaches his kohai Yuika, a cute and supportive student librarian.
Well, it's the least I could do.
Ach, das ist doch das Mindeste.
Bueno, es lo mínimo que puedo hacer.
É o mínimo.