A Rank Party wo Ridatsu Shita Ore wa, Moto Oshiegotachi to Meikyuu Shinbu wo Mezasu

Red Mage Yuki left the A-rank party "Thunder Pike" without a word after being a member for 5 years. After years of being insulted and called useless, he finally lost his patience. As he headed to the Adventurer's Guild to look for a new party, he met his former student Marina. She invited Yuki to join her new fledgling party which had only girl members. While capturing the dungeon, Yuki’s true ability was revealed. In fact, his magic and skills were non-standard! A fantasy adventure where the non-standard hero aims for a happy ending starts here! Source: NU