Akikan!: Kan Ippatsu!? Onsen Panic
Akikan! (2009) ／ Akikan! Hot Spring OVA ／ Akikan! OVA ／ Akikan!: Can We Survive? Hot Springs Panic! ／ Empty Can OVA ／ アキカン! (2009) ／ アキカン! カン一発!?温泉パニック ／ アキカン！
Description
The story revolves around a typical high school boy named Kakeru Daichi and the can of melon juice soda that he bought from a vending machine. The can suddenly transforms into a beautiful but standoffish girl that Kakeru nicknames "Melon," and more "Akikan" ("empty can") girls appear. However, Akikan girls need to be infused with carbon dioxide in order to turn into a human. (Source: Anime News Network, edited)