The S-Classes That I Raised is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

An F-rank Hunter. That too, a useless, pathetic F-rank hyung who dragged down his amazing S-rank brother. To me, who’d halfheartedly lived a disastrous life that’d ended up devouring my brother’s life and making me regress, the title given, was… ‘Perfect Caregiver’ That’s right, this time, instead of fussing about myself, let’s quietly look after those amazing bastards… …was what I’d thought, but the S-ranks are… a little weird.