Wonderful Days - Vol. 4 Ch. 4

[MangaDex]

 

[Thiron]

All signs point to Ichi being in Kaneko household some generations ago. Then he left and they became poor/unlucky.

 

[Jedic]

Glad I stumbled onto this.

 

[Beregorn]

@Thiron more like, they are still recovering from his"luck" ...