Plastics

Fujimoto Hajime is a third year high school student who has been dating his teacher Nakajima Keigo for the past six months, but he feels they're in an uneven relationship. Hajime's always the one to seduce Nakajima, and even though Nakajima's birthday is coming up he won't let Hajime buy him a present! Has Hajime been mistaken about their relationship this whole time?