(Cross over time!! Deku from Beko no hero Anime! And Diamond my as you already know Yuri on Ice oc. Deku meets Diamond at a party which his father owns and after a while thinks get out of hand. After dating Diamond Finds he's the son of a villain Boss and she dumps him which is a deadly mistake but to who will suffer? Yuri on the other hand runs a mafia gang who also loves a bit of danger.
Yandere possessive obsessed Deku x Mafia boss Yuri x famous skater Diamond. Enjoy the dark madness.)

"Deku I'm here." Said Diamond as she was posing for him he blushed as she smiled "My beautiful doll I always knew you'd look before in anything and I'm so happy I spent every penny on you." She smiled as he kissed her lips moaning as he gripped her ass lifting her dress she pulled away only to have him spank her and growl "Don't you dare pull away from me!" He cleared his desk putting her in top her bare back was pressed against the cold surface of the desk. "Your mine doll... I don't ever want to see you with another man because if I do.. someone will get seriously hurt and you don't want that...do you doll?"

She knew he was insane but she didn't think he was this crazy "Right doll?!" She said squeezing her neck looking at her with a crazy smile and look on his face "Y-Yes!" He stopped "Now doll why'd you make me do that?  I would never hurt you but when I ask you something or talking to you and you don't answer I get impatient and mad I'm sorry your love got me crazy in love with you, your touch got me so crazy in love baby." She was scared she was showing it he noticed immediately "Oh I'm sorry doll I didn't mean to scare you please don't be afraid." He hugged her "I... love you doll...do you love me?" She was silent until she spoke "Yes I love you Deko." He smiled "Oh I'm so glad because if you loved someone else... I'll kill them."