so his new power is not his original powers. and when he first used it, it almost damaged his soul forever. but the second time (when someone stabbed justice stomach well she was pregnant, killing the babys) it injured his soul with a long time cause. as you can see, he tecnacly now has things like gaster. but sammys (one of my ut oc) powers. damaging the soul hurt his, like before, memories, feelings, and health. and its worst. he is always in pain and cant remember basic things, like flying and what his family feels. and he feels less then half on people he felt for like, when he would be in love with someone he would treat them like a friend. and friends like enimies. but if you want him to feel the same way he felt for you before, you have to remind him. so yeah