have harem, polygamy
https://www.novelupdates.com/series/virtuous-old-man-sss-rank-is-confirmed-in-your-next-life/
harem, polygamy
source:
https://www.novelupdates.com/series/orc-eiyuu-monogatari-sontaku-retsuden/
polygamy & all red flag tags
source:
https://www.novelupdates.com/series/garbage-brave-isekai-ni-shoukan-sare-suterareta-yuusha-no-fukushuu-monogatari-ln/
Yamemasu Tsugi No Shokuba Ha Mao Jo