Yukika Sakuratani

A Labrador retriever named Quill begins specialized training as a guide dog from an early age, then the canine is paired with a blind man who is initially reluctant to rely on his new partner.

Twelve year old Sei has hit puberty and is quickly becoming sexually aware, sometimes not as privately as he'd like; erections in school and other inopportune times plague him. He talks about it with his school friends, Kinta and Nyanko, in between their feuding over the affections of classmate Yumi, but can't figure out what to do about it.