My Calamity-Prone Constitution Has the Fatui on My Case

[Transmigration]+ [Genshin Impact]+ [Half-Villain]+ [High-End System]+ [Everyday Shenanigans]+ [Occasional Sweet Moments]... Due to an unforeseen force, a gatekeeper is forced to transmigrate to Teyvat. With his disaster-prone constitution, he is personally named by the Tsaritsa to take the sixth seat among the Fatui Harbingers. All she wants, however, is to mold him into a completely obedient puppet! The sixth Fatui Harbinger, “The Gatekeeper,” takes office! “He lacks the composure and calm a Fatui Harbinger ought to have.”, “The Captain” “I hear Her Majesty personally appointed a useless fool to the sixth seat. I have no interest.”, “The Jester” “A rather good experimental subject, wouldn’t you say?”, “The Doctor” “Don’t know him.”, “The Damselette” “Worthless.”, “The Rooster” “He’s different, but utterly useless.”, “The Marionette” “(Kicked out of Teyvat)”, “The Fair Lady” “He’s a Harbinger, yet he’s always broke. Pathetic...”, “The Regrator” “He’s no match for any of the children.”, “The Knave” “He’s the reason I can’t see Lord Zhongli anymore!!!”, “The Childe,” gritting his teeth “This guy’s got a damn screw loose!”, “The Balladeer,” who prefers to remain anonymous “He can’t hold his liquor.”, A certain bard “He’s strong, but also weak.”, A certain Wangsheng Funeral Parlor consultant “Genius Invokation TCG? No thanks!”, Raiden Ei “You’re on good terms with the Balladeer?”, Nahida “The most handsome and strongest Fatui Harbinger in history!”, A certain shameless sixth seat