Or maybe you just don't have guts to charge through certain things.

[It's also a possibility.]

If Grell has the body she wants and she's happy, what does it matter if you're in the wrong body? You're still you and love isn't just about banging the other at any chance you've got.

[Even in an alternate universe Ikki seems to have issues with the idea of sex, maybe because here his parents divorced, his mother married again and had a trillion of kids with her new husband as if it was a must.]