The credits for the coupling song to Chikai are up:
Composed and Arranged: Sorma No. 1
Oxisols is a kind of soil found in tropical rain forests reinforcing once again the theory that the I’ve girls just hit “random article” on wikipedia repeatedly until they find a title they like.
Let’s try it out: Enviga? No, that’s trademarked.
Black Winter Day? Nah, too much death metal.
Dios? Getting warmer…
1888 U.S. National Championships (tennis)? Ok, seriously now…
Algerita? Common name for several species of barberry? Perfect! It’s a ten-thousand seller for sure.