Shirumi Kotoya

Shirumi Kotoya is a character, a side protagonist, appearing in [http://ycm.wikia.com/wiki/Yu-Gi-Oh!_HYPERFORCE! Yu-Gi-Oh! HYPERFORCE!], a fanfiction created by StarlightSG. She is one of Yufa's best friends, and one of his main voices of reason. Without her, it is likely he would be in a worse position, social-wise and duel-wise.