A Concubine's Competitive Life in the Prince's Household - Chapter 18

This is the story of a young man who was reincarnated as a dragon with a near-insatiable curiosity. Initially sparked by questioning his own reincarnation, he quickly gets lost in the endless world of magic, using his deep understanding of advanced sciences to learn the laws and properties of a new type of energy known as mana.However, soon enough, the table would flip, and he would begin using that very same energy to expand his knowledge of science, to the point that he would begin questioning his own understanding of the world.Although not his original intention, with the combination of his intelligence, expanding curiosity, and the 'miracles' that occurred to allow for his existence, he quickly found himself climbing the mountain of strength as if it were a small hill before eventually climbing to a point where it seemed as if he himself was the peak itself.Even if.. that was never the case...There is mild gore, and profanity is 'censored' toward the beginning, but not later in the story.

When she was eighteen, she was forced to take her sister's place and married him, who was disabled in both legs and impotent therefore.Despite all this, she has accompanied him through the darkest period of his life.However, two years of marriage and companionship still couldn't compare to the return of her sister.In order to treat her sister's illness, he even cruelly forced her onto the operating table, disregarding her pregnancy.His cold-bloodedness and ruthlessness left her heartbroken. After leaving the weak and sickly second child with him, she disappeared with the other two children.It wasn't until he completely lost her that he realized he had already fallen deeply in love with her.......Five years later, she returned with mini versions of their child.Looking at the adorable child who seemed like a spitting image of his son, his face turned pale.“Why do you look exactly the same?”The little one replied, “Biologically, only identical twins look exactly the same.”“?...”Did she give birth to twins?He angrily cornered her against the wall and asked, “So, you had twins back then?”She chuckled awkwardly, “If I say it was triplets, would you kill me?”

Being given a chance and reincarnated is nice and all, yet why do I have to become that male friend who just watches the protagonist flirting with his harem?---World: Kaguya-sama: Love Is War - Hyouka ----

Lin Chen was persecuted by his childhood sweetheart and accidentally obtained an ancient legacy. From then on, he embarked on a path against the heavens!“I am a sovereign! Those who insult me will be killed, those who obstruct me will die!”