[chaccu] Walpurgis no Inmu Aido Iris [Digital]

I don't understand Japanese, but what i do know is the fact that the Heroine really hates the Priest(I guess) and really oppose the Cults that the Priest lead so She recue every girl that got kidnapped and suddenly the Heroine herself feel to the Priest trap and beeing experimented, but the priest doesn't do that instead just lock the Heroines up and when The Priest say He knows Heroine when still child and not just about that, the priest itself is The Heroines Guardian when she still a Child, Heroine grows more affliction to the priest(When he still youngs), vut when the Priest got ordered he want to say goodbay to Heroine,but Heroine instead propose to Marry him when She goes to adult. And ass we know the priest has turned to be a lustfull, Disgusted Old Man, but despite his Appereance he still loves Heroines. And when Heroine founds out that the Priest was actually Her Beloved Ones that always Protect her.....You know the rest