Watch Oya ni Naisho no Iedex - Toshikoshi Hen Watch now on Miruro — Free Anime Streaming Note: Published for the 89th edition of the Comiket. Series info · Watch free · Trending anime · Airing schedule FormatMangaStatusFinishedSourceOriginalCountryJapan Hentai Oya ni Naisho no Iedex - Natsuyasumi no Bessou Hen (Prequel) · Oya ni Naisho no Umi no Iedex (Sequel)