Zero no Majutsushi - S-Rank Yuusha Party o Zenryoku de Support Shiteita no ni Tsuihousareta Saikyou no Majutsushi wa Party Kyoufushou ni Natta no de Zenryoku de Ohitori-sama Musou o Hajimeru Koto ni Shimashita 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

Rood is a magician who was a member of an S-Rank party until he was banished from the party due to the selfish reasons of Toran, the hero. After being betrayed by his comrades, the heartbroken Rood abandoned the town he had been staying in until then, and left on a journey to the neighboring country, Roland Empire, looking to start over in a new land.