my theory bout Herman is
maybe he try to slowly make anita his,
since anita only think about revenge, herman try to sabotage her plan while stay at her side so after the twist and turn when Anita's plan failed, she will have no one to turn to but Herman.
despite of that, I actually want a good ending for Anita, it's just so unfair for her ╥﹏╥
side note: HERMAN SO HOT WTF?! HIS WAIST SO SNATCHABLE ლ(´ڡ`ლ)
STOP EDGING MEEE AAAAAAAA