The supporting character's harem is very normal - Chapter 521: I will confront the Pope

A lonely soul, which was placed under the care of the Lord Protector’s Manor, ended up having her lover stolen by the family’s eldest daughter and dying tragically the day before her wedding.

The dawn era after the end of the half century has gradually rebuilt the order, abandoned civilization, and is full of undivided violence and desire.
The noble and powerful pioneers are in charge of the city, and the evil and mad plagues are in the wilderness.
Pure human beings who cannot mutate are the weakest, dominated by the rulers of the pioneers, and are not as good as animals in the wilderness.
A purely humanized young man with a worldly experience has quietly entered the WTO, holding a three-foot long knife and a long-distance desire to boil in the world of purgatory. From the nameless name to the sorrow of the Supreme Court, the name of the black ride is resounding!

- Description from Uukanshu (translated)

Meloni is just a musician. A normal, charming girl whom everyone loves and admires. But she has a secret; she can manipulate sound.For years, she managed to live with that secret, until everything came crashing down when her resonance was picked up by local organizations.In the midst of all the chaos, whether she should live as an awakened conduit or just a normal person, she ends up rescuing a small black bird.But that bird, is someone the whole world is afraid of.

The paramount existences among daemons are known as ‘Great Sages’.

A young man leaves the mountain village and wanders the world, entering the legends step by step, becoming a part of mythology itself.