Hm, idk about this one. I think I would've preferred for the brother to fall further into babyhood or for the brother to be a bit less docile if they're going for shame/domination.
This new artstyle isn't the best either but it's fine enough.

Also quick summary: A lingerie thief chooses "community service" instead of 3 years in prison and ends up being adopted into a family as a little sister. He can't do anything to defend himself from his sister or the girls at school because of a surgery that made him more docile, and the surgery also causes him to wet himself constantly. He's repeatedly shamed at school and at home and eventually becomes a girl in heart and soul.

Base +8, Elisryan +5, myoxy +10, shinigato +9

https://www.dlsite.com/maniax/work/=/product_id/RJ01376857.html
https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_573120/

Base +25, nuts987 +13, Jaredo99 +6

English translation please

Base +6, nuts987 +13, Mintyteawash +3, ManlyMustacheMan +6