I would have never expected to find this anime, came across on youtube and holy, it's so good. The animation, effects are smooth af. The first episode's first few scenes itself got me hooked. But it's the opening song which made me stay. The opening is a banger, i instantly fell in love with it, I don't know Korean, ni hao? I have no clue but the voice and sound effects in the op is so peak. Binge listening to it for past few days. This show is a must watch, it gives you vibes of spy x family, but it's unique. You might not like theschool troupe and the situation the MC is in, but it's worth the try. The school troupe actually is fun in this show.

Listen to the OP, i think it's called Attitude by Aespa.