Why are wives in these sort of mangas always sadistic terrors many times stronger than the obviously so pathetic husband and MC?
The only reason I can think is soin fights featuring them, they can win with ease because they can't show a man beating up a woman, but it's fine for women to be abusive.
@ Zeroisloco That doesn't work. At the beginning they say there are 11 Oddmen, and that Brother Itami has 9 exes made up of the Oddmen not related to him. Setsu is number 12.