第三の心臓 はるまきごはん Feat.初音ミク アニメ (The Third Heart Feat. Hatsune Miku (Harumaki Gohan))

しあわせ   星界 [Happy/ john feat. Sekai]

original > https://www.youtube.com/watch?v=JqSHNf3SR0w
please support the original artist

https://www.youtube.com/watch?v=RWruwZDNa78

https://www.youtube.com/watch?v=SJwoJnjcyhY

https://www.youtube.com/watch?v=zP7ux8WsYYI

vocaloid uploads, original producers are usually credited in the title or have a direct link in the description