Sister-in-law.. wth? This is the second time I have seen this used wrongly (one here)
Anyway, seems we had a bish in that transmigrator. I wish there was a novel in which the new MC becomes a sorta administrator and its an otome or harem novel world. and the new admin tis like... nope, fan service (big boobs and stupid panty shot and etc) spell its out of order now, harem function gets deleted and then all the old MC harem just woke up from their stupor.
Etc, etc. It could be called, revenge of the realist. XD