Akikan!

When Kakeru Daichi, a high school student, impulsively buys a soda from a vending machine, he gets far more than he bargained for. The can transforms into a young girl named Najimi, an "Akikan" — a mystical being who can only survive by drinking soda. This bizarre encounter thrusts Kakeru into a secret world where different types of Akikan battle for supremacy, each with their own unique powers tied to their beverage of choice. Now, Kakeru finds himself reluctantly entangled in Najimi's fate, responsible for her well-being and navigating the peculiar rules of Akikan society. As he struggles to understand the implications of his soda-fueled companion, he quickly discovers that the line between everyday life and extraordinary conflict is blurrier than he ever imagined, especially when his choice of drink dictates the very essence of his new housemate.

✦ AI-drafted summary