"Futari Saison" (二人セゾン^?, Duo Season) is the third single by the Japanese girl idol group Keyakizaka46. It was released in Japan on 30 November 2016 on the label Sony Records.

The center position in the choreography for the title song is held by Yurina Hirate.

The single was number-one on the Oricon Weekly Singles Chart, with 442,000 copies sold in the first week. As a female group debuted within a year, they broke over 400,000 sales record for the first time in 20 years and became the second group in the history following Puffy. It was also number-one on the Billboard Japan Hot 100.

It was released in 4 editions, Type-A, Type-B, Type-C and a regular edition. All editions, except the regular edition, include a DVD with music videos.

The choreography for the title song was instructed by Takahiro Ueno. The music video was directed by Ryōhei Shingū. It was taken in a suburb of Tokyo for two days.

All lyrics written by Yasushi Akimoto.

Center: Yurina Hirate

Sung by Hiragana Keyakizaka46(Undergroup) members.

Sung by the unit Five Cards consists of the following members.

Sung by the unit Techi Neru Yui-chanzu consists of the following members.

^{^}shipments figures based on certification alone

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