4U ~Hitasura~ was also the theme song to the PS2 game Monster Farm 4 (Monster Rancher 4), and both it and Bukiyou na Tenshi are included in that game's soundtrack.
4U ~Hitasura~ was also the theme song to the PS2 game Monster Farm 4 (Monster Rancher 4), and both it and Bukiyou na Tenshi are included in that game's soundtrack.