Complex sentence: Mio doesn't get along well with Tatsukichi when his alter-ego surfaces while cross-dressing, especially from the fact that Tatsukichi belittles Mio's bust size whenever his alter-ego comes out.
Split into simpler sentences: Mio doesn't get along well with Tatsukichi when his alter-ego surfaces while cross-dressing. Especially from the fact that Tatsukichi belittles Mio's bust size whenever his alter-ego comes out.