Arigatou (ありがとう, Thank You) is Hatsune Okumura's debut studio album.

It reached the 50th place on the Oricon Weekly Albums Chart.

[1] Arriving a year after her debut, Arigatou (ありがとう, Thank You) features her first three singles, Koi, Hanabi (恋、花火, Love, Fireworks), Suna (砂, Sand), Honto wa ne (ホントはね, Really?)

and a b-side, Natsuiro no Koi (夏色の恋, Summer Color Of Love), with eight new tracks.

It doesn't feature her digital single, Sotsugyou ~Mata, Aou ne~ (卒業～また、会おうね～, Graduation ~Let's Meet Again~)