Shoutout credit to _DaVeignci and Itscristhalynbelen for the 2D illustration character for Tantei association series! I really suggest their service on their pretty illustrations for those who want their OC drawn, head over to Tala's Graphica shop here: https://www.wattpad.com/1171981834-tala%27s-graphica-shop-2021-tala%27s-graphica-shop

The Boy:

Ranran's mentor.

Though not much is known about him, his death would later become the serving catalyst for the main protagonist Kudo Ranran.