"Amazuppai Haru ni Sakura Saku" (甘酸っぱい春にサクラサク, "In the Bittersweet Spring, the Sakura Blooms") is the first single by Berryz Kobo × Cute (pronounced Berikyū), a collaboration unit between the Japanese idol groups Berryz Kobo and Cute.

There was also a so-called Event V, a DVD containing several versions of the music video for the song "Amazuppai Haru ni Sakura Saku", released.

The title song was appointed as the ending theme for Ōsama Game, a BS-TBS horror movie in which members of both Berryz Kobo and Cute played.

[5] First "Amazuppai Haru ni Sakura Saku" will be included in the Hello!

Hotexpress's Tetsuo Hiraga wrote in his review: "The song has a consistent utterly happy and cute typical idol groove".