If you're looking for manga similar to Acid Town, you might like these titles. All recommendations are made by Anime-Planet users like you!
The sexually masochistic yakuza boss, Yashiro, isn't the type to warm up to others easily. But when Chikara Doumeki, his newly hired bodyguard, catches his interest, he reconsiders his "hands-off" policy with subordinates. As Yashiro's invitations fail, the yakuza boss finds out his bodyguard has a very personal reason for staying at arm's length.
Both Acid Town and Twittering Birds are top notch yakuza-themed BL manga, that care as much about the actual plot as about the boys lovin'. Characters are dealing with themselves, trying to come to terms with their pasts all while living in a tough and unforgiving world. Although they differ slightly in tone and sexual content (Twittering Birds having somewhat more comedy and a lot more explicit scenes), they're absolute must-reads of the genre. If you felt engrossed by the setting and character exploration of either of these manga, be sure to check out the other!