Kemono ni Namida
Ch. 1-3: Naru Samejima known as "Samejima the Unbeatable", is a Yankee that loves fighting, but the only person he can't stand up to is Toraji, his two years younger brother's childhood friend.He's always saying that one day he'll kick his ass but when Toraji whispers "Naru-chan" in his ear, why does he find it impossible to resist? There's also a story about two obstinate scientists and a student x sensei relationship. Ch. 4-5: Two coworkers are dating and lliving together. One is the boss and the other works under him and they fight at work. Ch. 6: A guy goes drinking with one of his friends that he is in love with when they are dumped by their girlfriend. After the friend gets drunk he takes them back to his place where he kisses him in the moment. Ch. 7: A student asks a teacher out, but when the teacher refuses the student blackmails him with a picture of him leaving a hotel with a man. Ch. 8: Continuation of first couple.
Ai No Binzoko