The only VTuber with a successful EN original song and a successful JP original song
>Mori
>RIP, End of a Life, Red, Dead Beats
They are all EN original songs
>Q
Gura handles the JP lyrics
>Future Island
hard carried by the One Piece's brand, also Mori did not even have a say in the lyrics
>IRyS, Mumei, Kiara, Bae, Nerissa
They can't even break the 10m threshold

With Ash Again approaching 5 million plays, Gura is the first VTuber with this accomplishment