Well, 'No. 6' is a good choice. It combines a unique world-building with interesting character developments. 'Doukyusei' is also worth reading for its sweet and heartwarming moments.
There's also 'Killing Stalking'. However, it contains some dark and disturbing themes. It's a very intense BL web novel that shows a rather complex and twisted relationship between the two main characters.
Well, 'Heartstopper' is also a great 'bl romance novel'. It has been adapted into a popular series as well. The story focuses on the sweet and innocent relationship between two high - school boys, with themes of friendship, acceptance, and first love. And 'Red, White & Royal Blue' is a fun 'bl romance novel' that involves a relationship between a prince and the son of the US president.
One popular 'isekai bl novel' is 'Kiss Me at the Stroke of Midnight in Another World'. It combines the allure of the isekai genre with a romantic BL storyline. The characters are well - developed, and the world - building is interesting.
Spicy BL manga is known for its steamy and intense depictions of male-male romance. The character development is centered around their passionate connection, and the settings and conflicts add to the allure. However, it's important to note that the level of spiciness can vary depending on the specific manga and the author's style.
Well, 'Love Stage!!' could be what you're looking for. It has similar elements of a blossoming romance and character growth like in Chansoo. The art style is also appealing and the story keeps you engaged.
I think 'Sasaki and Miyano' is also among the best. The story is set in a school environment. Miyano is a fudanshi (a boy who likes BL) and Sasaki is a popular boy in school. Their relationship starts from Sasaki's interest in Miyano and slowly blossoms into a deeper connection. It has a lot of cute and heart - warming moments, and the way their relationship progresses feels very genuine. It also touches on the insecurities and self - acceptance that the characters go through.