It's not so much that she's like Yuzu so much as she fulfils the same role as Yuzu does, at least so far. Plus there's that same dependence on others (eg the ankle thing), except Yuzu acted it out through whining where Io is more stoic. Also lol every chick in this game so far has a huge chest, Makoto is practically flat-chested as far as DeSu goes... Also yea I'm not so far in I can see clear stat biases but I did notice Io's progressing Magic / Str, which is pretty interesting. I heard there are even more awesome Str skills and so I don't end up like I did in DeSu1 with not enough magic skills to go around I'm just going balanced MC atm and considering levelling Str lol >.>