Colors of the Heart by UVERworld. not a recent song but it's nice. =3
YUI's Hello ~Paradise Kiss~

i only have their unplugged album and i love it. i've watched some of their videos on yt and i much prefer the acoustic stuff they did for the unplugged/live album
L'Arc-en-Ciel - Ready Steady Go
Seirios by RURUTIA. ♥
Otsuka Ai - Daisuki da yo ~! xD
Utada Hikaru - First Love
明日への讃歌 by alan

This one. Hajime Chitose - Haru no Katami .I think I listened it a million times. I heard it in the series Ayakashi: Samurai Horror Tales (anime), it's the ending song. This is more like my last obsession..I listen to a lot of Asian songs.
morning musume. - morning coffee

their first single ever *__* back in the 90s or early 2000 :O
Do As Infinity - Yesterday and Today
was the last Japanese song to come up on my mp3 player on my way home from the doctor's office. i can't find a PV only live versions
morning musume. - SEXY BOY~そよ風に寄り添って~
For me: School Food Punishment - Flow <3
Love it so much!! ^_^