 If you liked
Ningen Shikkaku
|
 ...then you might like
Hitori Koukan Nikki
|
Tale of an individual that struggles with being a funtional part of the society, feeling they are somehow "defective". The manga takes a look at human relationship. Both of those are narrated in the first person and have autobiographical elements - My Solo Exchange Diary is fully autobiographical while No Longer Human is authobiographical only partly and is otherwise fictional.