My Colorful Club Life [Crossover + Harry Potter]

[Main story complete] Railyth R. Ollivander is a wandmaker, and also someone who has transmigrated. On the day her OWLs results arrive, she opens and closes her eyes, and transmigrates back-- --to that place where everyone is a hyper-competitive overachiever, and everyone is Li Hua. Raily: "..." grass, a kind of plant But since she's already here, what else can she do? It's just a high-level competition among overachievers, right?! Ravenclaw will never admit defeat!! Raily thought she would be facing ordinary school life, until one day a girl tapped her on the shoulder and whispered in her ear: "Hello, Miss Witch. Interested in the Magic Research Club?" Raily: "...?" The girl: "Allow me to introduce myself. I'm Merlin from Class Three... Oh, of course, you might know me better by my other name." Merlin pressed the flush button and winked at her. "Merlin." Raily: "...??!!!!" Merlin's Chocolate Frogs!! After actually joining the club, the Ravenclaw overachiever with straight O's in her OWLs discovers that, in every sense of the word, she's the worst in the entire club!! The club president is Godric Gryffindor, the first headmaster of Hogwarts. The vice president is Merlin, the great wizard who aided King Arthur. Helga Hufflepuff smiles as she takes a tray of cookies out of the oven. A certain Slytherin who keeps a basilisk is said to be Salazar's only son. ...Well, let's put aside those big shots from the Middle Ages for now. A gorgeous American big sister who shares a surname with her good friend claims to be an excellent healer whom the British Minister of Magic personally recruited from St. Mungo's. Her childhood friend, who grew up with her, can easily take on several Cornish pixies barehanded without getting hurt. Gregorovitch, a white-haired, red-eyed wandmaker like her, once caused a huge incident by blowing up Durmstrang... and the last person to blow up Durmstrang was Grindelwald!! ...It's fine. There's also a wizard from Nippon... "Watch out!" The wizard from Nippon drew a katana and drove back the fairy who had tried to ambush them. Raily: "..." Uh, um... Does a weakling like me really deserve to be in this club? She fell into deep thought. Actually, Raily isn't really as useless as all that. The blurb just plays it up a little for comedic effect (?). Theme: In addition to studying, a variety of club activities can also make school life more fulfilling.