So far there isn't much of a harem going on. Depending on your choices you romance/corrupt different girls. Some of the paths are parallel so you can do them at the same time, but other paths are branching/mutually exclusive so the story is totally different depending on which path you chose.So does the 'Multiple Endings' tag mean that harem is optional? Or is it like those sandbox games where it is compulsory to go through all the girls?