it's a bl manga/manhwa (i cant remember) about a guy who got isekai'd twice; first is during his chuunibyou phase where he became a spoiled brat that cant use magic but keep being so arrogant, and the second one is when he's an adult. the mc has a jet black hair, and the ml is his knight? i think. they fought during the first isekai, then the mc got killed right after that.
it's a bl manga/manhwa (i cant remember) about a guy who got isekai'd twice; first is during his chuunibyou phase where he became a spoiled brat that cant use magic but keep being so arrogant, and the second one is when he's an adult. the mc has a jet black hair, and the ml is his knight? i think. they fought during the first isekai, then the mc got killed right after that.