http://www.mangago.me/read-manga/soshite_mata_kiss_wo_shite/uu/mpn_chapter-2357509/pg-24/ ...

No, it's clothes he have to wear in club, he is.

http://www.mangago.me/read-manga/soshite_mata_kiss_wo_shite/uu/ibx_chapter-4/pg-19/

It's called a Hakama, a type of traditional Japanese clothing.

I cought I would say uncorrect so I say it's that way and I did remember it uncorrectly. Thank you for correcting me.

I cought it call Hakuma