The phrase Shinseki no Ko to Otomari Dakara typically refers to a mature-rated (hentai) anime/visual novel project rather than a mainstream series. Because it belongs to adult-oriented media, finding a "helpful guide" through official streaming platforms is often not possible.
often host the high-definition, officially subbed versions of series like Shinsekai Yori Community Forums : Sites like shinseki nokotowo tomari dakar english sub top
(Note: The phrase "nokotowo" and "dakar" in your search seem like typos or misheard lyrics. "Dakar" likely comes from "Dakara" meaning "Therefore," which is common in lyrics, but not part of the title.) The phrase Shinseki no Ko to Otomari Dakara
Many viewers use Telegram channels dedicated to subbed content, such as UGT Comunicación or specific anime subbing groups. " which is common in lyrics