Legendary Roy (Fire Emblem) Fabian - I’m Not the Final Boss’ Lover Lance de Rosenberg - The Villainous Princess Won't Tolerate a Bad Ending Shana - Shakugan no Shana Diluc - Genshin Impact Do you know other examples?
IDK for manga, manhua and/or manhwa. But for anime, there's Ayane from Kaze no Stigma Other possibility is Hikaru from MKR (when she held her sword, it turns into physical form. But if others held it, it'll turns into fire that burns whoever held it)