Private detective and hitman Keigo Someha's life is turned upside down when a handsome, naive boy named Emiya Nozaki shows up on his doorstep. When he exhibits unusual powers, however, Emiya is kidnapped and taken to a laboratory. Now Keigo is driven to rescue the love of his life!
Contains related side story: Resolve
(B-U)

After being harshly dumped by his lover, Kousaka Yuuki, a shop manager at a restaurant, swore that he would never love again. One day he met his ex again who came to the store unexpectedly and it was completely exposed by Matsuoka, a kouhai at work, that he dated a guy. Kousaka was shaken that his past was known to Matsuoka, and that he would look down upon him, but Matsuoka forcibly kisses and says "I love you" to Kousaka...!?
(Source: Boys On Boys Love)

Kouya is a brilliant, yet antisocial, research student at a medical university. He has no need for friends and brushes off even the gentle fellow student Rei, who admires him. But Rei's not the only one interested in Kouya, professor Katase started to make his move and there are very bad rumours about him...
(Source: dollie_mixtures)