If she possessed him to make him killed himself, is it possible for someone to cleanly cut their own throat because his corpse have been slit on the neck?
That what most JP authors go with nowadays,
easy to make, easy to discard.
It shows that their average story writing ability & motivation has gone down rapidly in this decade...
The art starts as amateurish Pixiv standards, then getting better at the middle only to drop at several recent chapters for some time now. I wonder what happen at author's side...