Because 2003 April is definitely like a little sister to 2014 Raphael / turtles How Raphael knows about Casey? April has have some days when she has been missing other turtles and Casey and in those moments she has told about them to Raphael. After this Raphael has start to tease April about Casey with this little jingle which, of course, has piss and embarrass April but secretly also lift her mood up :3
