If you're looking for manga similar to Megumi, you might like these titles.
Kobayashi Yoshinori's political manga, detailing his unique perspective on a variety of contentious issues of modern Japanese society.
Set in the political unrest of 1960s Japan, a group of young revolutionaries seek to overthrow the world order by any means necessary. But the path they walk is not of glory, but infamy; the events that unfold will shock the nation of Japan to its very core!
In a tale set in the middle of the Meiji era, Shusuke Kano is doing hard labor in Hokkaido, imprisoned for demonstrating against the government for freedom and democracy. He escapes from prison with another government opponent and pretends to be an Ainu, to hide his true identity. Later, Kano meets Sokaku Takeda, a martial arts master, and becomes his disciple. Adept in martial arts, Kano works as a bodyguard for the Korean revolutionist, Kim Okyon. Kano is angry that leading members of the Liberal Party were freed from jail quickly and now live comfortably, while more unfortunate participants of the liberal democratic movement are still in prison. He soon becomes a faithful follower of Kim, a serious revolutionary.