Found a manga at the library,
Fool Night, and it's hooked me in.
In the far future, thick dark clouds have enveloped the earth into perpetual night, so natural plants died out. To keep oxygen levels high, humanity came up with a solution: transfloration. Due to ethical issues, only people with terminal illnesses get implanted with seeds that will turn them into plants called spiriflor within two years where they effectively live forever as such. They get paid ten million yen for their efforts, though, so it's a-okay.
Main character Toshiro Kamiya lives with his psychotic mother and his job barely allows them to live, and when she stabs him in one of her fits, he tricks his childhood friend, who works for the company, into letting him take on transfloration so he could have the money, though the reality of how short two years is hits him quick. Oh, and he can "hear" the spiriflora now, so he's a temp hire for the company. Being able to eat something every day now is a great motivator to keep on living.
Lovely art and composition, it has a cinematic flow at times. And the body horror, while not unique, is unsettling in the right ways. It's the mangaka's debut manga, really hitting it off strong here.
Though I do find it completely hilarious how a manga can just be given a rating for "existential themes". Literally "2deep4u".

Fucking hell, Viz, you're so embarrassing.