Possibly the Greatest Alchemist of All Time

An ordinary man accidentally summoned beside chosen heroes selects alchemy as compensation, framing his otherworldly adventure around peaceful creation rather than heroic combat.

Synopsis
The Anime Lad

Takumi is accidentally included when a group of heroes is summoned to another world. A goddess offers compensation in the form of one chosen skill. Hoping to avoid battle and live peacefully, he picks alchemy. This is a sensible attempt to turn supernatural relocation into quiet employment. Whether another world respects that plan is less certain, but Takumi has clearly submitted his preference for making things instead of fighting them.

Super Eyepatch Fox

Follow Takumi, an ordinary man mistakenly summoned alongside chosen heroes. Offered one skill as compensation, he selects alchemy because creation sounds more peaceful than combat. His choice gives the fantasy a practical center built around making, learning, and seeking an ordinary livelihood inside a world that expected heroic adventure.

Gigguku

Takumi is not a chosen hero. He gets swept into the summoning by mistake, receives one skill as compensation, and picks alchemy because he wants a peaceful life. I LOVE that choice. Instead of asking for the flashiest weapon, he chooses the ability to make things. That immediately turns a standard trip to another world toward craft, curiosity, and the hope of building a life on his own terms!

Father's Basement

An accidental summoning followed by a compensatory skill choice is familiar wish-fulfillment machinery. Takumi's preference gives it a calmer direction. He does not want heroic battles, so he chooses alchemy in pursuit of a quiet life. The premise works best as a fantasy of useful work rather than effortless dominance, with creation providing a distinct alternative to the combat role originally surrounding the summoning.