Yolohy

Ethan wakes up expecting to see the walls of a hospital room—only to find a system message blinking in front of him:
[Ding! You have killed a green worm]
[Ding! Green worm has been added to your summoning list]

Anything he kills becomes his to command?!

Ethan finds himself in a brand new world filled with magic and power. Awakened with an SSS-ranked class, he rises to power by conquering everything that stands in his path. While other summoners struggle with their dozens, he gathers millions as his army. There is no limit to how much he can grow, but he quickly realizes that forbidden power doesn't come without consequences.

Limitless Summoner: Rise of the Soul God

Ethan hoped he could learn some more new things but when he asked her again about how to switch on the cauldron and what herbs to throw in, the old hag completely lost it and threw him out of the workspace.

"Useless brat! Can't even light a fire under a cauldron? Do I have to spoon-feed you everything?" Her bony fingers gripped her cane so tightly that Ethan swore it might snap. Her eyes flashed dangerously, and before he could utter another word, she pointed at the door, her arm trembling with fury. "Out! Get out before I lose my mind completely!"

Ethan quickly got the hell out of there. Did this witch have bipolar disorder or what? He did not want to piss her off and get blasted to smithereens. What a batty old freak! He did not linger around and headed straight up to the small attic room.

Aqua Vis