Fugou Ichizoku no Muko ~Tsuma Igai Zenin Ore no Onna~ - Manga Series
2

I married into a wealthy family ~All the women in the family except my wife are mine~ Part 2 | 富豪一族のムコ〜妻以外全員オレの女〜 第2話
3

I married into a wealthy family, Part 3 | 富豪一族のムコ〜妻以外全員オレの女〜 第3話