My Post-Apocalyptic Shelter Levels Up Infinitely! - Chapter 24

“I'll do it. I'll do anything you want”Raiden clicked his tongue in a disapproving tone then raised Hiro's head once more.“That's not what I want to hear, Hiro” He said. “I want to hear you say it with your lips. I want to hear you acknowledge what you will be to me and your status from this day henceforth.”He stared deep into Hiro's beautiful brown eyes as he spoke; “Say that from this very second, you belong to me. Your body, your soul, your mind, every part of you belongs to me. You will be my pet and remain by my side. You will do whatever I ask you to do. Tell me that I own you, Hiro.”Raiden's voice was frighteningly deep and Hiro felt shivers run down his spine. There was nothing he could see but Raiden's smokey grey eyes, his handsome face and that devilish smile that gave him goosebumps and made his heart tremble with fear.With tears running down his cheeks, he balled his fists and spoke softly; “I promise, Raiden, from this very second, I belong to you. Every part of me is yours. My body, my mind, my soul, everything is yours. I will be your pet. I will do anything you ask of me. I will give you everything that I am. You own me, Raiden.”Watanabe Hiro used to be very rich. As the last child of the Watanabe family, he was pampered and spoilt by everyone but he was a good kid. He was obedient and friendly. Nice and very caring. He never did anything to worry others. He also had a lot of friends. Some were with him because they genuinely liked him while others were with him because of his wealth. That is, until a calamity befell his family and everyone he considered a friend abandoned him.Hiro was forced to live a wretched life for 4 years until he met a former senior who was ready to save him but under one condition.Hiro had to become his for a year.

A tree of 10,000 flowers, the world is the door.
The spells change a lot, but the hearts of the people are unchanged.

- Description from Uukanshu translation

In this world, people are granted a power said to come from the heavens, a mighty weapon tied to the soul of humans. Those who receive these magical weapons fight against monsters to survive, driving the economy of this world.Lian is just an ordinary boy until his world is turned upside down when another race takes away what matters most to him: his family. From that moment, follow Lian's journey as he seeks the strength to avenge those who killed his family and uncovers the truth behind his power.

This is a cliché story about two young people saving the world.