 If you liked
Gakkou no Kaidan
|
 ...then you might like
Jibaku Shounen Hanako-kun
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Reasons why these two mangas are similar:
-supernatural stories
-main character based off toire no hanako-san urban legend
-comedy and horror
-ghosts and yokais talking about supernatural events
Well the main difference between them is that hanako-kun has a bigger focus on the main characters story than gakkou no kaidan wich has a bigger focus on separated stories about supernatural events and also in gakkou no kaidan the main characters break the 4th wall with some frequency, but even with that they are still kind of similar.