Happy Synthesizer1,073 Views SingersGekiyakuVVocaloidKazehikiVVocaloidProducerKagamine Len! (DESI VER.)ProducerViews BreakdownYouTube1.1K ViewsDaily Views011/01011/02011/03011/04011/05011/06011/07VideorefreshRefresh Song DataListenYouTubeVocaDB