Talk:少女レイ (Shoujo Rei)/@comment-2601:447:C17F:F4A0:15A:EDDD:9BB4:DECC-20190208060630

From what I read in the Japanese YouTube video's comments, this song is loosely based on a story from a Japanese drama from the 90s. In the drama, a boy (A) becomes close friends with and eventually falls in love with another boy in his class (B). However, A is a member of a group of bullies who choose B as their next target. Afraid that if he tries to help he will face backlash from his bully-friends, A just watches the bullying unfold. This pushes B to commit suicide. (And afterwards, A goes into shock and shuts himself away, where he meets a mouse that he pretends is B, which might be the inspiration for the line about the mouse at the beginning.)

What seems to be unique to this song is the element of A starting the bullying on purpose out of jealousy and possessiveness, and A possibly trying to join B in the "transparent world" by also committing suicide. It's also interesting that even though the artwork shows 2 girls, the narrator sounds very boyish because of the use of "boku" and other masculine words.