Doubleyolkeggs

John gets a second chance at life, going back to the time before "The Gate to Another World" appeared. Betrayed in his past life as a pharmacist, he decides he can't trust anyone anymore. So, he opts for a hidden profession, becoming a poison master disguised as a regular pharmacist to everyone else.
To the other awakened ones, John is just your run-of-the-mill potion maker. 
Little do they know, every healing potion he brews is laced with deadly poison.
"John, heal me quick... Fuck! John, what did you do to me? Why have I turned bald?"
"John!!Why did my penis turn into a mushroom after drinking your potion?"
"You guys dare to drink John's healing potions? I saw with my own eyes last time, he threw a bottle of his healing potion and it directly stank a Corrupt Lord to death!"
"And that's nothing! I saw a toxic serpent bite John, and guess what? The serpent got poisoned to death by him!"
John sneered at the collapsed crowd, "I've said it before, though my potions are free, they come with some minor side effects. Want to get rid of the side effects? That'll cost extra!"
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Supreme therapist：My healing potions can even poison the gods

The demon Ghoul precisely controlled its power, ensuring it didn't harm the Twisted Treant inside.

Seeing its disguise exposed, the Twisted Treant panicked and tried to escape.

However, Hardy swiftly dashed forward and delivered a fierce [Punch], knocking it to the ground, nearly rendering it unconscious.

Hardy then bent down, grabbed it by the neck, and dragged the Twisted Treant over to John.

John instructed, "Alright, Hardy, you can rejoin the team now. Make sure our return times are staggered. Don't mention anything about me unless Eartha asks."

"I understand, Master. I told Eartha I was going to the bathroom." Hardy explained.

John nodded, signaling him to leave quickly.

Once Hardy had left, John wasted no time. The night needed to end soon. He placed his hand over the Twisted Treant's mouth and released a drop of [Primordial Toxin].

Encountering an Old Friend in a Foreign Land