Manga Saezuru Tori Wa Habatakanai
囀る鳥は羽ばたかない (Japanese); 鸣鸟不飞 (Chinese); Saezuru Tori ha Habatakanai; Song Birds Can't Fly; Twittering Birds Never Fly (English); Chú Chim Hót Không Bay (Vietnamese - Tiếng Việt - TV)
Genre: Drama , Mature , Adult , Psychological , Smut , Yaoi , Tragedy
Yakuza Yashiro, who has always loved only Kageyama, meets a new bodyguard, Dumeki Chikara. Unfortunately, the latter is very important. Masochist, lustful and beautiful yakuza Yashiro and his silent, clumsy, powerless subordinate Dumeki. This is a story about a man who never knew happiness, and a man who rebirths after learning him.