YOU SAID:

While you were partying, I was studying the blade

INTO JAPANESE

ブレードを勉強していたがパーティの途中、

BACK INTO ENGLISH

Were studying the blade in the middle of the party,

INTO JAPANESE

パーティーの途中でブレードを勉強していた

BACK INTO ENGLISH

In the middle of the party was studying the blade

INTO JAPANESE

パーティの途中でブレードを学んでいた

BACK INTO ENGLISH

In the middle of the party was studying the blade