The song is talking about that type of what you mean and the animation isn't that sus, plus Hatsune Miku first doesn't have a canonic age and there's nothing w it, and about the Hatsune Miku, isn't really hatsune miku, is an o'c of DECO*27! (I very nice vocaloid music producer btw) And in the animation there's nothing very innapropiate, yeah, kinda the final part but, cmon, the song is about that too!

And kinda there's worst things and songs, like PlusBoy, The Vampire etc! lolol

There's no need to report the channel of the animator (A VERY GOOD ONE), isn't the fault of the animator that the song is about it, besides, again, there's nothing VERY innapropiate in the animation! thats all, thank you for reading sweetheart!