Sugiru Juunana no Haru - Vol. 2 Ch. 13

[MangaDex]

 

[DayLo]

So she switched the two boys and raised her nephew as her son, right? Then Noriko is Takashi’s sister and Naoki’s cousin. Aren’t both still Sugata sons? Or is it just because the dead ain’t was the eldest, her “son” is the “heir”?