I’ve found a new Corocoro manga series that has a Body Inflation: サメゾン サメとゾンビとなんでも屋.
Chapter 3 & 5 has a male inflation With a one of two protagonists: カルビ aka Calvi.
Chapter 3:
https://www.corocoro.jp/episode/3270296674428445098
Chapter 5:
https://www.corocoro.jp/episode/3270375685329291862