The supporting character's harem is very normal - Chapter 219 New Contract

I, Hyoudou Issei, am a 2nd Year High school student and my age is equal to the number of years I haven’t had a girlfriend. And, someone like me got a girlfriend! I’m sorry buddies, I will walk the path of becoming an adult before you guys! – That’s how it was supposed to be, but why did I get killed by my girlfriend!? I still haven’t done anything yet! Are there no Gods in this World!? And, the person who saved me is the most beautiful girl in my school, Rias Gremory-senpai. I learned the shocking truth from her who isn’t a God but a Devil. “You have reincarnated as a Devil! Work for me!” Lured by Senpai’s breasts and treats, my life as a reincarnated Devil began. So the “Academy×Love Comedy×Battle Fantasy” starts here with just aggressive and worldly desires!

Anyone who could construct a stable Spell Model could become a Wizard — that was the Wizards’ ultimate secret! Having been given a new life as the son of an aristocrat and armed with a super quantum computer from his past life, Spell Models came as easily as breathing to Merlin. With this overwhelmingly huge advantage, would Merlin become the greatest Grand Wizard of all time?

He said: “My only wish is for you to disappear from my sight forever.”

Song Youran deeply loved Xie Jingchuan because of the warmth he unintentionally gave her. But she knew that Xie Jingchuan didn't love her, so she spent five years trying to make him fall in love with her. However, the result was that Xie Jingchuan hated her more and more every day. Looking back, Song Youran finally chose to ‘disappear’ from Xie Jingchuan’s world …

Everyone thought that Song Youran had died. Only Xie Jingchuan believed that Song Youran must still be living a peaceful life in a certain corner of the world. Previously, he thought that once Song Youran disappeared, he would be happy. However, when the misunderstanding was finally revealed, this was the first time that Xie Jingchuan truly felt heartbroken.

Even if love and hate were to be forgotten over time, could she fall for him again as if she had never been hurt by him?

Warlock of the Magus World, the world full of deceit, bloodshed, betrayal, backstabbing, logical thinking, profit oriented mindset and myriad of phenomenal mysterious entities. In this world a soul is reincarnated and we embark on a journey of a lifetime, as his ups and downs would be written in the annals of history of the whole Magus World.