Sorry this one took so long, I got so into this ask that it got long and work was over lol

Any for the LL's:
Yoshiko absolutely adores her growing sinful body, so she absolutely will be extra horny and gluttonous over her gains, and will be loud and proud about it, no shame what so ever in her behavior, to almost everyone's embarrassment as she lets her gut hang free, let's out belches in public

GnY Yohane however, I feel will do the opposite and do all in her power to reject the idea that she is fat, just... simply a little bloated or something despite struggling to get anywhere and constantly needs to be taken care of by her partner

Hanamaru I feel wouldn't exactly care for her weight gain, it's just the price to pay for tasty food and she is willing to pay that price lol, BUT I feel if it's with a partner (YHMR lol) then she would be way more into weight gain past 350 lbs

I love the thought of Dia just being a pure unapologetic fatass/super horny over her growing body, but I also adore the thought of a nervous Dia as well, like yes you can eat all that you want, we won't judge you if your tights rip, or buttons pop off

Other than some occasional horny thoughts (fat demanding cat Ai....) Honestly I feel most of my Niji favs would just be the same, with a hint of gluttony to them... Though Kasumin would be really proud of her flab and wants to show it off every stretch mark and the cellulite on her body (to Shizuku's embarrassment)

Non LL's:
This one makes me crazy, but I like the thought of Guy being a little (6ft tall) fat house cat and just laying around, wanting to be spoiled after the events of GGG v B, but I also enjoy the thought of him purposely gaining insane amounts of weight cuz it helps his defense (punches to the gut by a cybernetic soldier don't hurt when you're an Evoluder + have a massive gut to take the blow), so he gets really defensive about his body, but he tries not to think about why it feels so good when he rubs his gut, or when he feels how tight his body is against his armor

Lapis Fire Emblem would be horny about her body every second that she isn't working or thinking about Rosado

Akiha Tohno would hate being a fatass at first, but then after a while (when Shiki says he doesn't hate it) will fully lean into it, and be very prideful over her growing body, saying it's a symbol of her power or to show the status/power of the Tohno family

Akane Shinjo would hate her flab/complain about it I feel, but make no effort to actually lose it
Like not even "tried to exercise a couple of times but gave up", just didn't even try

A throwback to a game that I haven't thought about in a long while:
I like the thought of Makoto Naegi (yes him) being a fatass, but also being super mushy about it, like "yeah being fat means we're at peace/on the right track of rebuilding society" or for Naegiri "I'm just full of my wife's love💕"

Anyway, sorry for the long ask, but hope this answers your question lol