If you're looking for manga similar to Soul Eater Not!, you might like these titles.
The story follows the title character (also known as God of Death No. 413) who serves the role of sending the spirits of the dead to the afterlife. The "heartwarming fantasy" also deals with parent-child love, friendship, and social issues such as childhood bullying. Shinigami-kun's real name and other details have not been revealed, but he appears in his black suit and bow tie, saying "Congratulations, I'm here to take you to the next world!". Part of his important duties is to persuade someone who seems about to commit suicide and to prevent unexpected deaths (accidental deaths), but as a novice, he breaks rules of the afterlife and makes decisions like a human.
If you wished for your own death, how would you like to go? Here is one boy's encounter with a grim reaper...
Hades-sensei is no ordinary middle school doctor. In fact, many students believe he is a shinigami. His excessive friendliness and eagerness to win his students' affection does little to offset his terrifying appearance. But, fortunately for this middle school, Hades-sensei is an expert at extracting "byouma", disease demons, from possessed students!
Kaoru Minaguchi is a "no-lifer" who sucks at school, can't play sports, lacks any real talent, definitely doesn't have a girlfriend, or even a remote desire to change any of the above...until a certain grim reaper pays him a visit. Turns out, she's a reaper of "no-lifers" and if Kaoru can't find a way to become a true "real-lifer," he's as good as dead...! In an effort to stay alive and increase his odds of landing a girlfriend, Kaoru sends love letters to four different girls in school...only for all of them to say yes! But if anyone finds out about his four-timing, he'll be back to being a "no-lifer" and, worse yet, back to imminent death! Forget romantic comedies--this one's a thriller!!
Ichigo Kurosaki has always been able to see and interact with ghosts, but one day after witnessing a fight between a shinigami called Rukia and an evil spirit known as a Hollow, he finds himself dragged into a completely new life. When Rukia’s body shrinks after the battle, she is unable to carry out her soul reaper duties and forces Ichigo to become a substitute shinigami for seven days while she recuperates. Now he spends his days freeing souls from their bodies and defeating evil spirits, but when one of his classmates dies and is kidnapped by a hollow, Ichigo must race to save her and ferry her safely to the next world…
Takeshi wakes up one day to a cute shinigami, asking him to name his dying wish. Luckily for him, she's new at the job, and messes things up. Now, instead of being dead, he teams up with the shinigami Kiriko and helps grant the last wishes of people who are dying.
Jinna Amakura was a typical, if not a bit stingy, high school boy. Typical, that is, until he died. Or... at least he was supposed to die, but he didn't. Jinna is now considered by the powers that be as a "Soul Irregular".Enter Nagi. Nagi is a Grim Reaper on her first job - to kill Jinna and return his soul to the proper cycle of life and death. If she fails, she will be turned into her favorite dessert and eaten by the head of the Angels of Death. Not only does her job start off as worse as it possibly could, but Nagi and Jinna form an almost friendly, if not unusual relationship... just wait till her boss finds out...
Years have passed since Light and L's psychological battle of wits, and a new round of killings have begun. Many over the age of 65 are dying, and Japan's life expectancy has dropped, leaving many to believe that Kira is at large once more. Who is the cause of this new chaos?