Nanashi wa Ittai Dare Deshou? - Recommendations

• Vol: 2; Ch: 10
• 2002

As a child, Amasawa Rei had attended Shirohato Park Institution. After her parents were killed in a car accident, she lived at the institution and befriended a boy. She doesn't remember anything from the time she spent at the institution, not names, not faces, nothing, only that she and the boy shared a secret--a secret much darker than she thinks it is. Now, as a new student at Shirohato Academy with her old classmates from the Park, she is assailed by fragmented memories of the past. What was the secret? Why does she feel driven to find that nameless boy? And most importantly, why doesn't Rei remember anything from her past?

• Vol: 8; Ch: 78
• 2017 - 2019

Detective Xeno, who after being found collapsed at the side of a road covered in blood, was taken to a hospital. The first thing he did upon awakening was solving a murder that happened in the hospital! Xeno himself has no memory of who he is or where he came from, but after that huge incident and leaving the hospital, he opened up a detective agency. In just a year, he has solved some high-profile cases.

• Vol: 2+; Ch: 14+
• 2022 - ?

The man woke up and could not remember himself at all. His name, where he was from, and everything else had completely slipped his mind. According to the person who helped him, he was lying alone in the mountains. Dreams of being almost killed, strange flashbacks, and the truth that they ultimately lead to...!

• Vol: 5; Ch: 15
• 2015 - 2017

Okitegami Kyouko is a famous detective who solves cases in a single day. In fact, she has to, since her memories only last for one day before they 'reset.' However, for important things, she writes messages for herself down on her body with a special pen. One of her common clients is Kakushidate Yakusuke, a man who is often wrongly suspected of committing crimes.

• Vol: 14+
• 2014 - ?

Okitegami Kyouko is a famous detective who solves cases in a single day. In fact, she has to, since her memories only last for one day before they ‘reset.’ However, for important things, she writes messages for herself down on her body with a special pen. One of her common clients is Kakushidate Yakusuke, a man who is often wrongly suspected of committing crimes.

• Vol: 1+; Ch: 59+
• 2017 - ?

The night of his coming-of-age ceremony, Mihara Kouki lost his memory. The one thing he remembers is the moment "someone pushed him". Relying on this tiny memory, Kouki will face his past self while pursuing his own relationships (with other people) — as he chases the criminal, he yearns for these relationships(to create bonds with others)! He enters a human drama where he reels in the thread of memory!

• Vol: 6; Ch: 48
• 2022 - 2023

Tsubasa Ichinose is a middle schooler who loses his memory in an accident. He is able to safely reunite with his family, but is soon faced with a new shocking reality... What is going on with this family?! 

• Vol: 3; Ch: 29
• 2020 - 2021

A woman is revived with no memories, however, she knows that she was trying to find someone that was dear to her. With the help of a detective, she has 49 days to find out who revived her because the condition to revive the dead is the other's death.

• Vol: 5; Ch: 10
• 1991 - 1998

16 year-old Mishima Haruhi rescued a guy drowning in Yokohama Harbor, who has no memory of who he is or how he got there. Even more mysteriously, he seems to have extremely special powers including the ability to heal others. The only clue they have to his past is a bracelet he is wearing with the number "33" inscribed, but it is not long before people threatening to take his life force them to dig deeper...

• Vol: 2; Ch: 8
• 2005 - 2006

Zen is a man with no past; he can't remember anything except for intense urges to kill, steal, and be a menace to society, making waves wherever he goes. After kidnapping the daughter of a general, Zen finds himself embroiled in a conflict between citizens of Amata and Galay, leading him to question his past once more. Together, Zen travels with a cowardly doctor to discover the truth behind his murderous ways...