Houkago, Sensei to Koi ni Ochiru
放課後、先生と恋に堕ちる
Mi lied about her age and is working part time. She was in an extreme bind when she was seen by Sawamura sensei! But sensei permitted Mi to work there. This is the beginning of a secret relation with sensei. When Mi is with sensei her heart beats faster. Is this sensation… what you call love? But is the reason why sensei is so nice to me because I’m his student...!?
(Source: Chibi Manga)