Uncontrollable Possessiveness

"I see!"

"So this boy was really a third-rate character. His name was Eren, He was an orphan and had a cute childhood friend. At age of 7, he went abroad on a scholarship and became invested in some scientific research. He mostly confined himself to his house which he bought cheaply and rarely had any interactions with anyone. But one day he somehow got the news that his childhood friend became close to a boy and both of them were about to join the same martial university. The worst part was that boy had lots of female admirers."

"He rushed back as he already regarded his childhood friend as his life-partner but on his way to enrol in the university he met some people talking about that boy and his childhood friend as a perfect couple, in anger and provoked by their words he directly killed them.."

"This setting….since I managed to land close…this is definitely the setting of a protagonist, the person with the bullshit luck."