Akinashi Rin

The heroine of the fourth episode.

Itsuki's childhood friend and classmate.

Her beautiful looks, good manners, and excellent grades made her popular among both men and women at the school.

However, this is only a facade, and she is actually a cunning and evil woman.
She has a cold attitude towards Itsuki who knows her true self.

She saw potential in the electronic drug and proposed doing a business with Itsuki.

Despite coming from a wealthy family, she is obsessed with money, and has made a lot of money by working with Hina on a large-scale Papakatsu business.
She made all the arrangements and stayed behind the scenes to avoid being traced, and left the execution to Itsuki and Hina.