Sei has so much trauma. When he saw she was going to kiss him he involuntarily puked. That's really messed up. The mom might mean well, but she needs to go to a mental hospital, she's destroying the poor kid.
@IEatWater i see no good intentions behind that. She is obviously very very mentally depraved. Sei is just in shock. He really needs to spend some time away from her or he'll lose his mind