YOU SAID:

mr meow meow is late to his own party

INTO JAPANESE

Mr meow meow は自分のパーティーに遅れています

BACK INTO ENGLISH

Mr meow meow is late for his party

INTO JAPANESE

Mr meow meow は彼のパーティーに遅れます

BACK INTO ENGLISH

Mr meow meow will be late for his party

INTO JAPANESE

Mr meow meow は彼のパーティーに遅れるでしょう

BACK INTO ENGLISH

Mr meow meow will be late for his party