Shinseki no ko to otomari dakara " (親戚の子とお泊まりだから) translates to "Because I'm staying over with my relative's child,"
It could be a gentle but firm boundary-setting phrase. shinseki no koto otomari dakara
Whether in a period drama, a modern argument, or a subtitle you’re trying to decipher, this phrase marks the moment when “family” becomes off-limits. Shinseki (親戚) – relatives no koto (のこと) –