It's ridiculous that no one recognises her despite there being no freaking changes to her face except her EXPRESSION. Also, pure manga logic that she's suddenly so strong when she changes. =.= Could be a lot better if the MC was shown to be secretly thinking all the things she wants to say and do instead of remaining the same doormat only for her alter ego to step in all the time and save her yet leave her with no memory. Hence it doesn't feel like MC is growing as a person at all, and she isn't even aware of her split personality while her split personality steals all the scenes so much I'd rather she be the real MC instead... The switching itself is fun, but just not very well done.