The second season of Yuusha Party wo Oidasareta Kiyou Binbou.

Betrayed by his childhood friend and cast out of the Hero Party, Orhun Dura—once their loyal Enchanter—is branded by his former comrades as “a jack-of-all-trades but a master of none.” Alone, he sets out to forge a new path as a solo adventurer. His journey sparks explosive battles, deadly rivals, and unexpected allies—and he’ll rise to shatter every expectation. The ultimate solo comeback begins!
 
(Source: Crunchyroll)

"Orn Doula, today will be your last day in the party."
 
Since the party was lacking someone who could play the essential role of Enchanter, it was the quickly adaptable Orn who had converted from Swordsman to Enchanter. On a certain day, Orn, who belongs to the Hero Party, is suddenly informed by the party leader—"your skills are lacking, so leave the party." The other party members also insulted him as a "weakling" and a "jack of all trades but a master of none."
 
After being expelled from the party and getting a fresh start, he decides to resume adventuring. This being so, he chooses to return as a Swordsman since he was an Enchanter only due to party circumstances. However, having been an Enchanter was definitely not a waste. His time in the Hero Party, knowledge, experience, and development of countless original magic will certainly nurture Orn into a swordsman of unconventional strengths.
 
(Source: Shousetsuka ni Narou, translated)

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