Aquamarine

Heisuke has learned that Chizuru has been having a lot of trouble lately in her world history class, so she's been staying late after-school to go over her class notes with her homeroom teacher, Harada-sensei. Usually he'd be a bit wary about always leaving her alone, but thankfully he can trust that her teacher will make sure she gets exactly what she needs... SanoChi, AU, SSL.