Reku-tan

A fridge that's been illegally thrown away at the garbage dump was picked up by a girl called Natsumi-chan, as she finds it works fine despite its super old age. However, she didn't expect it to turn into a human one day in order to repay her…

This manga illustrates Hoshi-kun's original concept in Henjo - Hen na Jyoshi Kousei Amaguri Senko (Vol.6 Chapter 37)