Hikari Hamura, nicknamed Picasso by his peers, always has a pencil and sketchbook in hand. Though he used to spend most of his time with his only friend Chiaki by the river's edge, things changed for the boy forever when a helicopter crashed on top of them, killing Chiaki and leaving him virtually unscathed. Upon awakening, Hikari is told by Chiaki's spirit that he is alive because she prayed for his safety, and in return, he must help classmates in need with the power of his sketchbook, or his body will rot away. Now, with the help of his angelic partner and his artistic skills, Hikari must help save his fellow students, gaining plenty of friends along the way.
Alice Seno is a plain and ordinary fifteen-year-old girl, and that's exactly her problem. Perpetually overshadowed by her beautiful and popular older sister Mayura, Alice grows to resent her sister for being so perfect. But when Alice finds a rabbit while crossing the street one day, things change forever. The rabbit turns out to be a magical scout named Nyozeka who claims that Alice is a Lotis Master - a person capable of harnessing the power of words to enter people's hearts and dispel the darkness within. However, Alice accidentally uses this new power on Mayura, and she vanishes. Now, Alice must join forces with her handsome upperclassman Kyou and Lotis Master Frey to rescue Mayura and rid the world of the dark power of the Maram Words.
Susamu Nakoshi, a man disillusioned with life, meets Manabu Ito, a young medical student bored with life. To relieve his boredom Ito offers Nakoshi 700,000 yen to undergo a trepanning to see if it will unlock his sixth sense, and Nakoshi eventually agrees. However, much to his dismay and chagrin it actually succeeds, and now Nakoshi must contend with seeing homunculi, the metaphysical and symbolic representations of a person's psychological disorder. He now helps people, usually against his own will and often theirs as well, with resolving their psychological problems.
The protagonists of Homunculus and Genkaku Picasso both have the ability to see others' true thoughts/selves, and use this ability to help people deal with past trauma and other difficulties.
Genkaku Picasso is a bit like Homunculus-light: the former is much less graphic and usually doesn't deal with quite as heavy themes. However, even though Picasso ran in Shounen Jump, it was written by noted seinen mangaka Usamaru Furuya, so seinen fans will find plenty to love in it.
Dating sim master Keima Katsuragi wants nothing more than to immerse himself in the 2D world, chasing digital girlfriends. But when the so-called 'Capturing God' answers a mysterious email from an unknown sender, Keima finds himself chasing down real-life ladies in an attempt to help the peppy demon Elsie de Lute Irma capture 'lost souls' escaped from the depths of hell. Now, lest the explosive collar around his neck detonate, Keima must convince various girls to fall in love with him in order to scare out the souls hiding in their hearts.
Both mangas involve the main character who has to help people with their problems or he will die. And the main character in both mangas are fairly similar, they're also both social outcasts. If you like one you should read the other.
This is another semi-episodic manga by Usamaru Furuya about the problems of high school students. Genkaku Picasso is a bit more realistic/relatable, but both display a similar blend of character drama and surreal artwork.
Recently died and have unfinished business? The Kurosagi Corpse Delivery Service is your ticket to a worry-free, eternal rest! Made up of spirit communicator Kuro; embalmer Keiko; leader Ao; body dowser Makoto; and Yuji, a boy who communicates with aliens through a hand puppet, the group handles everything from suicides to murders with ease. Whether you need a message delivered or want vengeance for your death, the Kurosagi Corpse Delivery Service can help you out - for a price. And while the team often has to end up working on a volunteer basis, they'll still get the job done with a sarcastic smile!
Both center heavily on the themes of death and helping others. While KCDS is much more grim in places, both series have a comedic streak and can be very heartwarming at times. If you enjoyed one there's a good chance you'll enjoy the other