If you're looking for manga similar to Made in Abyss: Marulk's Daily Life, you might like these titles.
It is the future, and "Earth" has long given up on mankind and become able to produce "witches" - beings that have the sole purpose of killing humans. The "Time Witch" placed a curse on all of humanity that dooms everyone to die the moment they become an adult. As such, children are now the only remaining life on Earth. But there are various other witches who seek to take even the lives of those children, and despite more and more children dying each day, there's one girl who hasn't given up on the idea of launching a counterattack against the witches...?! Blood and flesh are sent flying in this atrociously cruel fantasy!
Higuchi Kotarou was just a normal sixth-grader until a new next-door neighbor enters his life–an insanely perky angel named Misha that has made it her life’s work to make Kotarou happy! And if that wasn’t enough, Misha has an even stranger roommate–a kind-hearted demon named Shia and her mysterious black cat Nya! If Kotarou’s life at home is this weird, what can it possibly be like at school?
A quiet, atmospheric journey through the ordinary life of a young boy growing up in Showa-era Japan. Masterfully told through the scattered memories of seemingly-mundane moments in his young life, this short work captures the zeitgeist of a generation.
Fourth-grader Aoyama investigates the mysterious reason behind the sudden appearance of penguins in his village. and suspects it is somehow related to the power of a young woman working at a dental clinic.
The daily hardships of Hikage Miyakawa, a young girl who lives with her sister Hinata. Due to Hinata's otaku impulsiveness to constantly buy merchandise, the two girls struggle everyday to have something decent to eat.
Nagomu Irino returns to his Kyoto home for the first time in ten years when his father is hospitalized. Nagomu is eager to take over Ryokushou, the family's Japanese sweet shop, but he's instead asked to be a father figure to Itsuka Yukihira, the girl everyone calls the successor.