Gadielle

Gadielle is the firstborn prince of the Tenbaal Kingdom, son of the ambitious King Lavisiel. Unlike his power-hungry father, Gadielle is known for his genuine kindness and upright character, earnestly seeking to forge a true friendship with the protagonist Eren. Upon uncovering a royal conspiracy to manipulate the elves, he chose to confront his family's wrongdoings and take responsibility for their actions. As the story progresses, he ultimately becomes a half-elf and formally enters into an engagement with Eren.