28AH-2006: Nidaime wa Christian Original Soundtrack

[SaintSquall]

"A SONG FOR LOVE" and "Nidaime wa Christian no Theme" are in fact the same song with the same lyrics in English, but sung by different artists. On the single (07SH-2004), the 2 songs are indicated "Theme Song". In any case the version by DAREK and EVE is much better sung in my opinion.
"DAREK" is certainly Darek Jackson (https://vgmdb.net/artist/24748), given his particular first name and judging his voice. As for EVE, is it the singing/chorus group (https://vgmdb.net/artist/34638)? Indeed there is not only a female voice if we listen to the song.
Finally, the unit BIRDS was formed exclusively for the theme song by actors affiliated with Kadokawa Haruki Corporation.