Both movies are japanese BL movies that has more dark and psychological stories which includes rape and sexual assault. In Sing in love, one character is sexually assaulted and while the context is a bIt different from Dangerous Drugs of Sex, both are psychological and healing movies.

They are both japanese BL movies adapted from a BL manga where the relationship between the characters is complicated, controversial at times. The story in both movies is catered to an adult audience or older teens because it contains adult men who has adult like responsabilities and mature themes. The main characters in both movies are very flawed individuals, which makes continues mistakes because of their insecurities.