Detective Conan: Teacher Hagi No Ya's Days Away from Teaching

[Female-oriented + partial redemption for the police academy group + gray character, but strictly a member of the Black Organization + CP undecided + has a System + genius girl specially appointed as a teacher at age fifteen + OOC is definitely going to happen!]

[Whether the heroine is Hagino Ya Tianhai or Xinchuan Youji, those are just personas she adopts as the plot requires. They are only roles she plays on the outside, so her behavior may seem contradictory from one moment to the next: sometimes friendly, sometimes indifferent. Pay attention to her conversations with the System and her inner thoughts! She isn't a good person in the traditional sense, nor is she a bad person in the traditional sense.]

In her second life, Hagino Ya Tianhai was bound to a System. This System was strange: it taught her things until she had mastered them, so she became a teacher too! As a genius girl in painting, wouldn't becoming the art teacher at Teitan Elementary School be a piece of cake? But why was she always finding ways to neglect her actual duties?

[Slightly redemption-focused] (As for what that means, you'll have to read and see for yourselves.)

[There may be a gray Pine setting, and the ending will very likely be a happy ending for everyone (I mean everyone who survives in my story). If that bothers you, please don't read!]