YOU SAID:
Storm was happy when he bought ice cream
INTO JAPANESE
ストームはアイスクリームを買ってうれしかった
BACK INTO ENGLISH
Storm was happy to buy ice cream
INTO JAPANESE
ストームは喜んでアイスクリームを買った
BACK INTO ENGLISH
Storm gladly bought ice cream
INTO JAPANESE
嵐は喜んでアイスクリームを買った
BACK INTO ENGLISH
Arashi happily bought ice cream
INTO JAPANESE
嵐は喜んでアイスクリームを買った
BACK INTO ENGLISH
Arashi happily bought ice cream
That didn't even make that much sense in English.