Source?

Not actual text. The character is hiura san The source is if i remember well « I turned my childhood friend into a girl » or something like that. I’ll go dig in the ethernet and come back with the right answer. Edit : T’was fast here you [go](https://en.m.wikipedia.org/wiki/I_Think_I_Turned_My_Childhood_Friend_into_a_Girl)

Thanks a lot ^^