on alternative foreign theme song,it's not that the anime's dub went with the original theme and switched back. the first game wasn't released outside of japan when the anime was dubbed,so the game used an opening there which was later used in episodes 10,12,14,and 16 and also used in episode 18 onwards. the first game wasn't released outside of japan until episode 9 was dubbed. episode 10 did get a dub shortly after,meaning they chose the song for the game to promote the upcoming dub of episode 10
on alternative foreign theme song,it's not that the anime's dub went with the original theme and switched back. the first game wasn't released outside of japan when the anime was dubbed,so the game used an opening there which was later used in episodes 10,12,14,and 16 and also used in episode 18 onwards. the first game wasn't released outside of japan until episode 9 was dubbed. episode 10 did get a dub shortly after,meaning they chose the song for the game to promote the upcoming dub of episode 10