Yellow Heart...

[狐神｜Kitsugami]

... Personaly I find Pish adorable, she also appears to be the youngest character in your party, witch, witch makes it akward then her HDD form: Yellow Heart has the most freakishly large oppai of any HDD form. however puting that aside, and pertending that Yellow Heart is not actuly underage bait. Yellow Heart alone bugs me, I find her beatutful with a wonferful face... though her size in other area does not go well with that. frankly I think she should be closer to Purple or Iris Heart's size. her current size just looks unnatral,and does not fit her face or her body. This really bugs me

[Hiroshi Mishima]

I absolutely HATE Yellow Heart's design. I was happy to have this bubbly kid in my party, then I saw her HDD form and it reminded me of how much I hated Green Heart's design (and insistance on talking about breasts all the time) and it just... like salt in the wound.

When I first saw her design I was like "oh gods the later games are going to get so bad with this garbage, aren't they?". I mean, I know I'm -weird- cause I absolutely detest those stupid, huge, jiggling breasts they give characters in a lot of anime-inspired games, and this is very much an anime inspired game.

I just.. Sorry, it's a seriously raw nerve for me. They're so freakishly unnatural, and to stick them on that formerly tiny girl drove me nuts. It's probably why I stuck her on Support and forgot about her and Iris.

[naru]

If you don't mind spoilers from Re;Birth3 which is the game she is from:
She is actually around 20 by the end of the game. Due to how goddesses come to be in that world she is stuck as a kid and her mind also seem to be stuck as a child's, although it is theorized that she is just mentally disadvantaged. It is also likely that the item that made her into a goddess have side effects on the person's mental state.
Her HDD form's body proportions are off likely as a side effect(haven't been confirmed as far as I know) of having her body modified to be able to use more shares at once than the other goddesses giving her an overwhelming advantage in combat power if she is supplied with a strong enough flow of shares.

and yeah Peashy is indeed a smol ball of adorableness. Well it's easy for me because given how her normal form is I don't see Yellow Heart that way.

[naru]

Originally posted by Hiroshi Mishima:

I absolutely HATE Yellow Heart's design. I was happy to have this bubbly kid in my party, then I saw her HDD form and it reminded me of how much I hated Green Heart's design (and insistance on talking about breasts all the time) and it just... like salt in the wound.

When I first saw her design I was like "oh gods the later games are going to get so bad with this garbage, aren't they?". I mean, I know I'm -weird- cause I absolutely detest those stupid, huge, jiggling breasts they give characters in a lot of anime-inspired games, and this is very much an anime inspired game.

I just.. Sorry, it's a seriously raw nerve for me. They're so freakishly unnatural, and to stick them on that formerly tiny girl drove me nuts. It's probably why I stuck her on Support and forgot about her and Iris.

hm let's see...
In Re;Birth2 Magic is pretty big and shows it off although she is not a playable character so IDK if it matters.
In Re;Birth3 Yellow Heart and Iris Heart are playable, other than them we have Rei Ryghts who is not playable but she shows off in her transformation.
In VII Uzume binds her chest and her transformation Orange heart has a moderate size.

[cannon9009]

quit complaining about boobs, green heart literally keeps 75% of her mammaries uncovered.

[Lorim]

You can hate the difference between her normal self and her HDD.... But this difference make sense because.... Peashie/Yellow heart = PC-Engine.... And the PC-Engine was smal (Open a 3DSXL and you have more or less a PC-Engine in size.... But the PC-Engine is lighter...) but packed quite the power for the years she was released (she was able to beat the Genesis/Megadrive and SNES quite frequently)