Baka to Test to Shoukanjuu‎ - Volume 12.5, Me (Watashi), Graduation and Parting words

Power and desire, money and strength, conscience and responsibility, the road ahead is at a loss, as a time traveler, Simon, where will he go, this is a leading mainstream novel with a relaxed daily life and a slow pace

- Description from novelbuddy

Seven SinsSeven sistersSeven Arch-ParasitesSeven Host.Orion a late bloomer who didn't get a system was terrified as he couldn't accept it.But something happen, something he never thought in his life will happen.When one of the seven picked Orion everyone changed, Orion was now blessed with a system, why was he blessed?But again lust is one of the sins and he was here to be strong, revenge and conquer all the women in the world. Perhaps 100 lady in his harem, who knows 200.(ALERT)♥Unconscious host detected♥♥Host body damaged to the core, useless, but yet something can be sensed.♥{Scanning Host Body}♥Seven sins detected in host body.♥Compatible sin is Lust.♥♥ Compatible sin is Greed.♥♥ Compatible sin is Gluttony.♥♥ Compatible sin is Sloth.♥♥ Compatible sin is Wrath.♥♥ Compatible sin is Pride.♥♥ Compatible sin is Envy.♥{Initializing System Integration.}

“I hate this world. I hate everyone. There's no justice for the weak,”Once happy and carefree, Reign's life took a dark turn when he was kidnapped and undergone brutal experiments.These trials broke not only his physical body but also shattered his mind.In the end, his body couldn't withstand the ordeal, and he died like a pitiful lab rat.But death wasn't the end.He woke up in a new world as a corpse, armed with the Ultimate Mutation System.A system that enabled him to mutate and gain power in exchange for his own humanity.Determined to avoid being exploited again, he sets out to become a true powerhouse.He knew that being weak would only make him a target, especially now that he was a monster.“Kill or be killed.”That was his only option.

A love story that came about due to Fight The Landlord. [1]