Because Shinseki no Ko to Otomari Dakara is categorized strictly under mature, adult entertainment (18+), finding the "full" content safely requires caution.
The combination suggests the user heard a snippet of a song online (likely on a platform like YouTube or TikTok) and is trying to reconstruct the title or a lyric to find the full track. The use of phonetic spelling is a strong clue that the user may not be a native Japanese speaker. shinseki no ko to wo tomaridakara de nada full