Lullaby - Miura Daichi My favorite Japanese song for quite a long time now.
At the moment it's
Gerunika by Kuroyume
Shito Raisan ~ Yousei Teikoku
Super Boyfriend - Kishidan
THATCRAZYOTAKU wrote: Ai Nante - Tegoshi Yuya


Forever a favorite! :')
茅野愛衣、戸松遥、早見沙織 – secret base ~君がくれたもの
LiSA – Crossing Field (Sword Art Online OST)
梶浦由記 – At Our Parting (Sword Art Online OST)

I also listen a lot to Ayaka these days!
Daesung - I love You
Daremo Shiranai- Arashi
Silence iz Mine , existence 
Aozora no shita, kimi no tonari - Arashi
<3
Space Sheriff Gavan Type-G