Original name of the game: DRACU-RIOT! (ドラクリオット)

The hero Rokuran Yuto and one of the heroines, Yarai Miu

That's a screenshot from the OP of DRACU-RIOT! There's only an OP for DRACU-RIOT! There's no main episode, but there's a manga and a game (which was supposed to be a game adaptation

===★Deep Snow★===