im barely remember anything about this manga and probably over a decade now.

as much as i remember is MC has an ability to summon smth like a skull beast that has an eye in the month and also some part of the head look alike to corrupted steven, other heroines also have this kind of ability as well (summoning beast but in other colorish....?)

Deadline Summoner

Quote from Otakuch

Deadline Summoner

nope not this one but thanks anyway.

Anything doesn't come to mind other than it, sorry.