If you're looking for manga similar to Deka Kyoshi, you might like these titles.
Mystery centers around Mayumi Hanazaki, a middle-school girl who used to live with her aunt and uncle until a mysterious person mercilessly killed both. Now, thanks to an unusual incident, Mayumi relies upon the spirit of the legendary detective Kogoro Akechi to solve cases.
University student Sogawa Ichika inherits 5 trillion yen from her father all of a sudden and attempts are made on her life by his siblings. The avaricious family has struck a deal to let the person who kills Ichika first have all the money to himself or herself and tries all means to take her life. Ichika’s housekeeper hires the investigator Chikumagawa Hikaru, who has a perfect record of solving cases before they happen, to protect her.
A long-awaited comic series which is a collaboration with the rising stars “EBiDAN39”! A teenage prodigy… and also a dropout?! Follow the school life adventures of six unique and unconventional students! Due to his excessive absences, Riku Rokuoin , who is a genius with an IQ of 270 ,ends up needing to go to a special “ Sunday Remedial Class” but the students he met there were ones of his kind!
Daimon Kaito is a high school boy, who loves puzzles. One day, the president of the student council gives him a mobile device and it leads him to an underground ruin buried in the school. He challenges an "insolvable puzzle" hidden in the ruin with his girlfriend Nonoha, but the puzzle turns out to be the dangerous "The Puzzle of Sage" created by the black society "POG". He manages to solve the puzzle but it's the beginning of a puzzle battle against POG.
The carefree days of a group of friends turn into horror as female students begin to die random gruesome deaths in their town.
The story starts with Sanda, a second year middle school student, getting attacked with a kitchen knife by his classmate Fuyumura. While Sanda couldn't make sense of the situation at first, he gradually came to believe that Fuyumura's actions were just mean acts stemming off from the latter having a peculiar puberty phase. But that is all a misunderstanding. Fuyumura actually suspects that Sanda is the descendant of a certain clan...
Kusakabe Shiina, who has advanced to the second year of a new high school, meets Akihiko Chuzenji, a new instructor of Japanese. Chuzenji always read books with a bad mood. A combination of teachers and students confronts a series of strange cases.
Reo, commonly known as "Boku-chan," is a weak and solitary second-year high school student. Sitting next to him was a girl student named Miki Kimino who was just sleeping. One day, my classmate Himekawa is missing. Kimino, who was interested in this case, goes to the art room with Reo and aims to find out the truth of the case-!?