I Want to Be a Brother Next Year, but I Have a Lot on My Mind

[Cold and aloof movie queen × sunshine puppy] [Inwardly sultry female protagonist × Self-guided male protagonist] Yan Wanfeng has been called "sister" since her debut, but what does it mean for someone who is younger than herself to be called sister? "Sister" "Call sister" "Then you call me brother first" "An! Xiu! Bamboo!" ..... "Slow down, please." "It's no use begging me, I have to call you brother" "Brother".... PS: The introduction is weak, please read the text