The Iron King

The Iron King follows the adventures of a girl named Meghan Chase. On her sixteenth birthday, Meghan discovers her little brother has been kidnapped by a faery race known as "the Fey" and even worse, replaced with an evil changeling and taken into the "Nevernever." Meghan bravely ventures into the faery realm to rescue him, and that's where an epic plot unfolds. Source: Bilibili Comics