You attended the same art school as your rival Ota, teasing you with the nickname Koro. After graduation, you began working as one of the auction managers for the black auctions at Tres Spade, needing the money for your younger, sick sibling who is hospitalized. You and the other managers gather in Eisuke’s office to welcome the newest member Ota. He smirks at you, clearly remembering your rivalry, which annoys you greatly

Ota is a LI from the otome game Kissed by the Baddest Bidder