MC is still super dense and completely oblivious to Mabel's feelings, but man, Mabel looks absolutely badass here
Thank you for translation
Reverse outfit (with bodysuit) as the powerup? That sword has good taste.
Yeah, I was just thinking that it looks like she's wearing the exact same "spats" due to the same wavy design band at the bottom, but I guess her spats were actually just an inner bodysuit the whole time (maybe this was already shown in a previous chapter and I just forgot).
So the transformation really just ditches her shirt, cape, and shoes, in order to make wings sprout from her back and give her long gloves (with what looks like some kind of bracelet) fused with a collar, and thigh high boots that perfectly meet the lower edge of her bodysuit with a band that inverts the wavy design. And PVC-like texture. Aside from the obvious necessity of removing her shirt and cape to let her wings get free, this transformation is tailored to match her existing clothing. So yes, VERY GOOD TASTE, sword...
Edit: Wait, are those things not wings, but some kind of levitating double half-cape? This manga is quite something...