You are one of the members of the Armed Detective Agency and Fyodor were one of the members in Decals of Angel

You two trapped in a spacious room And on that long table have an one collar

"One of you must wear the collar if someone of you lose" Nikolai said

"Let's this game begin!" In hyper tone but at the same time Nikolai give a evil smiles

Nikolai teleport to somewhere and now only me and Fyodor