Baka Mitai (I've Been a Fool | Japanese: ばかみたい | Hepburn: Baka Mitai | originally titled Bakamitai) is a recurring karaoke song in the Yakuza/Like a Dragon series. It is first introduced in Yakuza 5 and is subsequently featured in ''Yakuza 0'', ''Yakuza Kiwami'', ''Yakuza: Like a Dragon'', and ''Like a Dragon: Ishin!'' It is sung by Kazuma Kiryu, Shun Akiyama, Taiga Saejima and Yu Nanba. A remix of the song titled Bakamitai -sorrow- (Japanese: ばかみたい-哀愁- | Hepburn: Baka Mitai -Aishū-) is featured in Yakuza Kiwami and is sung by Kiryu. The album Ryu ga Gotoku 5 Yume, Kanaeshi Mono Original Soundtrack (Vol. 2) features both a jazz arrangement of the song titled Baka Mitai [Jazz Version] and a duet of the full version of the song as sung by Saejima and Akiyama titled Baka Mitai ~feat. Saejima & Akiyama~. Later albums feature full versions of the song as sung by Kiryu, Bakamitai 【Taxi Driver Edition】and its remix Bakamitai -sorrow- [Full Spec Edition].