The Prince's Black Poison, Volume 2 (The Prince's Black Poison #4-7)

Rizu is interested in the shabby chemistry teacher Azuma-sensei, so things get awkward between her and her childhood friend Souta-kun... Souta-kun tries to eliminate the competition like always, but this teacher is a surprisingly challenging opponent?! The gorgeous Souta-kun plots and schemes. Crack open this cunning, adorable childhood friend love story!