Lin Dongzhi transmigrates to Teyvat and becomes an ordinary person who can't even beat a Slime. But he awakens an outrageous golden finger: the [Roast System]. As long as he delivers a sharp, spot-on roast of the people, events, or things in Teyvat, he earns Roast Points that can be exchanged for elemental powers, character skills, ancient divine weapons, and even Constellations. The more precise the roast, the more absurd the reward. But there's one crucial catch: he has to say it to the subject's face for it to count. And so a menace appears on the continent of Teyvat, roasting everyone he comes across.
Venti: “Ehe, what do you think of me?”
Lin Dongzhi: “The guy who drinks, sleeps, and snores beside the Statue of the Seven, louder than Dvalin's roar?”
[Ding! Spot-on roast! SSR rating! One-hundredfold critical hit! Obtained max Anemo affinity!]
Zhongli: “From a general perspective...”
Lin Dongzhi: “You ran out of Mora again, didn't you?”
[Ding! Fiftyfold critical hit! Obtained Geo affinity!]
Raiden Ei: “Eternity is...”
Lin Dongzhi: “The shut-in who hasn't left home in five hundred years and has Yae deliver her takeout?”
[Ding! SSS-rank roast! Electro unlocked!]
Raiden Ei: “Get in here this instant!” When the power of roasting becomes strong enough to shake the Heavenly Principles, all of Teyvat finally realizes one thing: this man's mouth is more dangerous than all Seven Archons combined.
It's great. There are so many fanfics, and this is the only one that appeals to me.
It looks good, and the golden finger setting is so novel that I can't stop laughing. Hahahahahahahahahahahahaha