Board Thread:Questions and Answers/@comment-32771002-20170226221608/@comment-26423554-20170306231043

Yep, the bonus modes are like alternative universes, but all the characters are in-character and we get more information about them. You don't even really get to know some characters if you don't play bonus modes.

The love hotel scenes show the other characters' "ideal partners", so that's definitely noteworthy.