whatever the fuck is the ML's name? Ah-Seong? Seong-ha/ah?

In the offical translation it's Ah-Seong.

seriously, because in Korean, his name is 성아 (Seong-a/Seong-ah), so it's so weird to see it flipped around to Ah-Seong.........

Idk if they've gotten confused with how the last name goes in front of the first name or what but that would be a pretty big mistake to go unnoticed so no idea