Asian Kung-Fu Generation is a Japanese band you might know from a bunch of anime openings like FMA's 'Rewrite', Bleach's 'After Dark', Naruto's 'Haruka Kanata' or The Tatami Galaxy's 'Maigo Inu to Ame no Beat'.
What they play is mostly a sort of alternative rock, maybe with a few punk-rock or post-hardcore influences. They have 6 albums and a Best Of released to date.
(There was a thread already actually, but it didn't even have the name spelled out so I thought remaking it would be ok.)