Tenshi no Uta

Cosmic Fantasy or Tenshi no Uta (天使の詩) is a role-playing video game was developed by Riot and published by Telenet Japan, and it is the first game in the series. It was released for the PC Engine CD on October 25, 1991 in Japan only.

Story
A distant old world, the main character, Keal, embarks on an adventure to rescue Claire, the daughter of the heavenly world who was kidnapped by a monster. However, behind that, there was a plan to destroy the world called the resurrection of the demon king Lucifer.