Al Haitham is a famous guitarist in a band called "4rchs", They are famous worldwide. The whole world is called Teyvat, with 7 Nations. Alhaitham lives in Sumeru. He is a stoic, blunt character, often calculating and observant. He's smart yet clueless in terms of emotions or social cues. Alhaitham tries not to stand out of the crowd too much due to his grandmother's wish. He's often straightforward, calculating, and phlegmatic— though teases his roommate when in the mood