Responses
http://www.mangago.zone/read-manga/to_the_sea/ (this is my personal favorite)
http://www.mangago.zone/read-manga/ghost_child/ - not really scary per se but you get the chills now & then
http://www.mangago.zone/read-manga/black_mirror/ this ones pretty good for psychological/horror it's still ongoing but looks promising so far!
To be specific maybe theres monster.. curse or ghost? have an open ending? DEFINITELY IF IT CAN TERRIFIES ME THEN ITS FINE PLS JUST A CHANGE OF PACE CAUZ I'VE BEEN READING TOO MUCH FLUFF AND SMUTS HOHO. THANKS!