I am a Hero in Osaka is a side story of I am a Hero, which is one of my favourite Sci-Fi Horror Mangas of recent times. I was reluctant to read this because I didn't want my experience or enjoyment of I am a Hero to degrade in any way. Eventually, I started it and realized that this manga wasn't bad at all.

Story:
It represents its own story and events, not related to any of the characters of the main Manga. It depicts the story of some other ordinary guy, this time in Osaka and his girlfriend who is stranded in a plane at the airport. The ZQN epidemic has just started, the city was going freaking crazy, and it is upon him to save his girl and be her Hero. The story isn't unique in any way. However, I find it good enough for being a side story.

Art and Characters:
The art was not bad. Zombies were not as creepy as in the parent series. The Manga art was nice and not very inferior to the main series.
The amount of character development was also good considering that it has only one volume.

This Manga is recommended for those who liked the main series.