I'm 90 years old and the system tells me it's time to create harem - Chapter 4: I’m afraid my husband will misunderstand!

Violet skies, a world undergoing massive changes, a deficient moon, interlinking voids…
When the world experienced a cataclysmic event,the majority of living things ceased to exist. Although humanity survived by hiding in the last safe zones, humans had to face mutated dire beasts and colossal source beasts that could break through the space barrier and enter the earth at any second.
Luo Yunyang, a young man who grew up in those calamitous times, obtained an attribute regulator and set out to walk the path of supremacy!

- Description from novelupdates

Liu Yan, an ordinary office worker from Earth, unexpectedly traveled to a strange world.

The heroes of the ages are on the side, embarking on a journey to conquer the heavens.

- Description from novelbuddy

He was the crown prince of the shadow realm and the lord of wrath, Azrael. All creatures, demons, mortals, even angels feared him. However, everything changed after he went for a secret mission in the mortal realm in order to expand his seven sins power.Hiding his identity among the mortals, the vampires were attracted by his royal blood. The mortals were either jealous or admired his abilities. The angels were curious about him. The demons wanted to kill him and take over his power.Little did he know, he had another hidden power sealed inside of him. Something terrifying that could turn him either into the ruler of the three realms or an evil that could destroy all beings.--------------Tags: Mature Content , Comedy , Tentacles, Monster Girls , Yandere , Succubus , Magic , Demons , Angels , Hybrid , Hiding Identity, Goddess , Devil , Battle Academy , Beasts , Action , Mystery , Overpowered , Strong to Stronger , Harem , System , Servants , Handsome Male Lead , Smart Male Lead and a little bit of Slice of Life.

“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.