Nibiiro no Hana Gou
Sanshamendan-chū ni Iku nante...
Ch. 21 Don’t know if this is the end or not but any-whoo the MC choose her stepfather then her teacher since she just see his father through her teacher...(Period)
Introverted Little Brother Steals His Social Sister
So her brother is adopted with her not knowing
Butterflies don't dance near poisonous flowers
I do not quite like it
Love in the Fujinami Household -A New Romance Begins in the Family!?-
There isn’t actually a seggs part but the girl got to choose between her two older brother and one younger brother (not actually young maybe 2-3 years younger than her). But in the end she choose her oldest brother (a doctor) and got registered for marriage. I don’t actually know if their relationship is step siblings or half siblings.
Kago No Naka
The story plot is good but there isn’t a Seth’s scene but I like how possessive Isiah
Ani-tachi no Aisarete, Korosarete
Her brothers friends was actually her biological brother then the three brothers was her adopted older brothers. It’s just sad that the seggs part is not detailed
Uchi wa Futago de Teippai!