If you are determined to find an English-dubbed version of a sleepover-with-relative-themed adult anime:
So the literal meaning: “Because it’s a sleepover with my relative’s child – English voiceover work.” shinseki no ko to o tomari da kara english dub work
There is no official anime or English dub work released under the exact title " Shinseki no Ko to Otomari Dakara If you are determined to find an English-dubbed
(親戚の子とお泊まりだから…) "Because I'm staying over with my relative's kid..." It is almost certainly a fragment from a
The title Shinseki no Ko to Otomari Dakara (translated as "Because I'm Staying Over with a Relative's Child") is a series that has seen a rise in interest regarding its availability in different languages. Many viewers interested in the animation style and narrative often look for information regarding English dubbing work for such titles. The Status of English Localization
The keyword does not correspond to any official, professionally dubbed English anime. It is almost certainly a fragment from a niche adult visual novel or hentai OVA that a user hopes has been translated and voiced in English. While amateur fan dubs may exist, no legitimate English release is available.