Momoshiki's Planet

This planet resides in a different dimension than Earth, and as such is only accessible from there using space–time ninjutsu. A Shinju once grew on the planet, attracting the attention of Kinshiki and Momoshiki Ōtsutsuki. Over a period of time they fed off the Shinju's chakra; by the time of Boruto: Naruto the Movie the Shinju is dead. Though the planet's air is still breathable, the planet no longer has any native life forms: remnants of dead forests dot the otherwise barren landscape. Thick, red clouds surround the planet.

Trivia

 * Being able to host a Shinju, it's unknown if the planet in the past also hosted a certain sentient being and also shared the same dark past like the Earth, where countless battles also plaguing here and the blood of deceased spilled there, leading to the planet's Shinju's creation.