This year’s 19th issue of Kodansha’s Evening magazine has announced that Kei Sanbe’s Island in a Puddle manga will end in the magazine’s 20th issue on September 28, 2021.

The story of the manga is described as:

The tiny apartment where Minato lives may as well be an isolated island in the middle of the ocean. Despite still being in elementary school, it falls on his shoulders to care for his little sister Nagisa, who never stops asking when their mother will make one of her infrequent visits home. On one of those visits, their mother takes them to an amusement park, only to give Minato some cash and leave them on a Ferris wheel… but as the wheel reaches the top, lightning strikes, and, instead of his sister, Minato sees the corpse of a woman… and, reflected in the glass looking back at him, an unfamiliar and menacing face.

Sanbe launched Island in a Puddle in Evening magazine in November 2019. Kodansha Comics has licensed the series for North America and will release it starting in 2022.

Source: ANN