YOU SAID:
a cosplayer walked into my store
INTO JAPANESE
コスプレイヤーが私の店に入ってきました
BACK INTO ENGLISH
A cosplayer came into my shop
INTO JAPANESE
うちの店にコスプレイヤーがやってきた
BACK INTO ENGLISH
A cosplayer came to our store
INTO JAPANESE
当店にコスプレイヤーさんが来てくれました
BACK INTO ENGLISH
A cosplayer came to our store
You should move to Japan!