Hard to say. You could ask around in your neighborhood or search on popular mapping apps. Sometimes, local shopping malls or comic conventions might have manga stores too.
Call Me Hero Manga 261 is a manga created by Kengo Hanazawa. The manga was about a mangaka hero who had been serializing for half a year, trying hard to return to the ranks of professional mangaka, but his drafts were repeatedly rejected. Although the search results provided did not provide a specific storyline, it could be speculated that the story might continue to describe the challenges and difficulties that heroes faced in pursuing their dreams as professional cartoonists.