I think it was shoujou manga and the mc was twins girl in their high school

both wears pig tail as their hair style. first girl are tomboy/childish and the other girl seem have kind/mature personality

both twins love one person a boy whose was popular, handsome, king(cliched love interest)

the tomboy girl knows she can't win against her kind/mature sister , they have same face but different personality

the tomboy girl try to act like her sister and even confessed her love to the boy ,but he got rejected and said already date her twin sister.

the tomboy girl also been stalked by a boy. He was a boy with easy going personality, i think he was quite a deliquent because his classmates keep avoiding him. He keep confessed to tomboy girl but she keep rejecting him and even say harsh word to him but he never give up.

I think when the tomboy girl are rejected by her crush, she run away but got chased by the deliquent boy and say he will hit the boy who rejected her. The tomboy girl say stop and the boy say only stupid people who will reject you, i will always accept you and he confess to her.

in the end i think both are dating with each of their matched personality couple.

it nearly have same premise like The Star and The Heart by Ando Yuki(this is one chapter story, while the manga i was looking have 3-5 volume i think).

i remember the manga have polar or star/space name in the title of it.

Haruiro Astronaut

or might this oneKoisuru Futago to Megane no Blue

Be kind or get banned

it was hairoru astranaut

thanks a lot 😀