Tokyo: From Lawless Madpolice to Minister - Chapter 10 - 9: Are You Teaching Me How to Do Things? Volume King Fujimoto Ryosuke

A human from Earth is thrust into the [Hunter x Hunter] world, becoming the Zoldyck family’s defiant, red-eyed prodigy. They call me a genius and the rightful heir, but I say that’s Killua’s burden to bear.Armed with crimson eyes, and a subtle yet powerful system, I’ll rewrite destiny, upend the world, and embrace the chaos with a wicked grin.

Ever since she transmigrated, she was blessed with an inbuilt anti-poison detector.

Beep beep – What? Her father’s concubine was evil and her half-sister was vicious?
Beep beep – Ah! She was in an arranged marriage and her husband did not love her?

Who cared? She could kill those evil creatures instantly with her high intelligence.

Her unparalleled beauty attracted countless suitors and her popularity topped the charts. No one was immune, even the emperors and princes were all captivated by her…

- Description from Novelupdates

(This is a dungeon core story!)Sylvan is a nymph. A nymph who had lived his entire life protected by a barrier. Hiding the fact that his tree was a dungeon.But now, someone took off the barrier! Tourists are besieging his tree, cutting off branches to use as presents!He has only one option left before him: he must use the mind-altering mushrooms which he grows near his dungeon tree to stop people from chopping his tree down!And it just so happens that he knows how to cook with a flare!Follow him as he feeds those who want to cut off his tree, brainwashes them, and finally levels up his dungeon.This was not a romance story... but then the kind vampire appeared, and the MC lost his heart.