Not at all. The relationship between Dazai and Chuuya in the manga doesn't involve any kissing moments. Their interactions are more focused on other aspects of the story and their characters' development.
Osamu Dazai (February 22, 1985-April 18, 2019) was a famous Japanese novelist, politician, critic, translator, and ideologist. He was hailed as one of the founders of modern Japanese literature and one of the most outstanding representatives of the Japanese literary world.
Osamu Dazai's works had a unique style and deep emotions. They described the people at the bottom of society and their lives as the main line, and carried out in-depth discussions and reflections on human nature, society, history and other issues. His works were deeply loved by Japanese readers and won widespread praise internationally.
Osamu Dazai was not only an outstanding novelist, but he also dabbled in politics, culture, art and many other fields, and put forward many profound insights and thoughts on social and historical issues. His life was full of controversy and challenges, but his works have always left a deep mark on people's thoughts and emotions, which had a profound impact.
Dazai is not based on a true story. Usually, characters like Dazai are formed through the author's imagination and artistic expression to create an engaging narrative for the readers.