Firsusin 

Firsusin is your first cousin.

She: He’s my Firsusin.

Firsusin by Sakurakage February 9, 2021

Firusin 

Firousin means First Cousin

Normal: Where are you going?
Someone: I'm going to see my Firusin.
Normal: Cool

Firusin by Sakurakage February 5, 2021