https://www.mangaupdates.com/series/crj4aux/saikyou-ranking-ga-aru-isekai-ni-seito-tachi-to-shuudan-ten-i-shita-koukou-kyoushi-no-ore-mob-kara-kensei-e-to-nariagaru This feed shows the latest releases for the series Saikyou Ranking ga Aru Isekai ni Seito-tachi to Shuudan Ten'i Shita Koukou Kyoushi no Ore, Mob kara Kensei e to Nariagaru as shown on MangaUpdates.com