...P...Please forgive us...Yeeeah...It's me, Mizuki! I changed my looK!Red-san, Green-san, hey!Ain't that nice....It looks cute....Forgive what?Why are you looking away?Huh?Did you do something?Why the sudden change of personality!?
Did you get possessed!? You got possessed, didn'cha!?
乗り移る means to either change or possess