I watched this anime a long time ago. Anime has pretty dark theme in Gotham like city and relationship between those brothers is more like Itachi and Sasuke's. Older brother made himself hated by his brother but actually loves him. Younger brother has a sword with red ribbon on it.

does anyone one this description of the Manhwa? "It doesn't seem like it in the beginning, but it students that play in a game. The Manhwa start with the villain, poisonous snake that poison a girl and therefore her touch poison whatever she touches. There another player, a doctor, he does his be...