Remember in Ch.13 where goddess said the og Sou from this 1:39 world actually doing better in transported Sou world compared to current Sou.
With how this mom said Sou might get traumatized & holing up in room again, and previously very harsh with his sisters, og Sou probably craving a more normal common sense world (where the current Sou come from) than this 1:39 ratio of women pouncing men on daily basis