END OF A CENTURY☆DARLING 2006 (Yaoi Manga)
The legendary "Tsundere" couple, Sanshiro Sakamoto and Sentaro Katsura. But Sanshiro is too selfish and arrogant. His best friend, Yoichiro Takasugi warned him that it's only a matter of time before Sentaro leaves him! Sentaro swore to Sanshiro to make him happy! Can it be...?!