As it suggests, the love interests of the protagonist have to be younger than the protagonist. However, it is only used when the age difference is quite significant, and either the physical/mental aspects of this difference gets some screen time.
I fell in love. Her name was Shirasaki Yukino. I could only look at her from a distance. However one day I heard that she already had a boyfriend. Even if I love her, I can’t have her. The devil sent me an invitation. I can make her mine!
Chen Rui, an otaku from earth, is reborn into a human body in another world, who falls into the legendary evil, brutal world of the devil called Mozu where humans are treated as food. He has to survive while facing horrors of the devil, violent dragons and a variety of powerful enemies by depending on a strange super system chip and his wits. Surrounded by Devil’s beauties such as black-bellied lolita princess, cold queens, violent dragons, charming poisonous devils … Wanting to live in the Devil’s world is hard! Wanting to live in the Devil’s world as a human is harder! Wanting a human to be the devil’s son-in-law is hardest! Let us see how a small otaku uses power and strategy step by step starting from an ordinary human to writing a legend as the devil’s greatest son-in-law.
Hao Ren, an ordinary university student, saved a little girl who fell from the sky. By accident, he swallowed a “candy” that fell off of that girl’s body and somehow became the Dragon King’s son-in-law…… His life was turned upside-down from that point on. There were dragons in this world? And they are living side-by-side with humans? Ancient Chinese Mythologies really happened? Hao Ren got to experience a new world that was hidden from ordinary humans. Despite the thrills that came with the new discovery, there were challenges along the way. He thought his easy life as the Dragon King’s son-in-law was going to be laid back, but conspiracies and undercurrents were coming his way.
After his transmigration to the cultivation world, Shen Tian discovers that he can see the fortuitous opportunities and their providence haloes of others. In order to rub off some of the luck from these opportune characters, Shen Tian proactively gets close to them. … Eventually, everyone realizes that no matter who it was, as long as they hang out with Shen Tian, they will gain lots of fortuitous opportunities! And there’s no exception to this rule! From then on, Shen Tian was labelled as the most popular lucky mascot in the cultivation world! Fairy Qing Yue: “I once followed my Senior Brother to the Kunlun Secret Realm in the West, and obtained the Sun And Moon Orb!” Princess Ling Long: “I once followed my Senior Brother to the Imperial Burial Valley in the Northern Sea, and both of us inherited skills from Emperor Dan!” Immortal Phoenix Queen: “Haha, what a bunch of fledglings! Do you know how he got his Dragon-Phoenix Immortal Form?”
After being reborn in the ancient times before the Great God-Conferment War, Li Changshou becomes a minor cultivator. He is neither destined for great things nor great woe. His only dream is to live a long life as a cultivator. In order to survive in the cruel Primordial Times, Li Changshou tries hard not to accumulate any karma—killing inevitably leads to feuds. Thus, he always plans thoroughly before doing anything and never allows himself to walk into dangerous situations. He hides his trump cards well, trains himself in escape techniques, refines poisonous pills, and masters his mystical abilities. Before making any moves, he takes on an extremely steady demeanor. Yet, every move of his ends up earth-shattering. Once he is done, he will disappear without a trace. Li Changshou originally plans to remain hidden and safe in the mountain. There, he is supposed to cultivate until he ascends to immortality. However, everything changed one year when his master seems to think that their lives are too peaceful… He takes in a junior sister…
Yang Ming is an underachiever in high school. He skips class to shoot pool, cheats on his exams and gets into fights. However, by a twist and turn of fate and luck, he obtains some high-tech contact lenses that give him superpowers and dramatically change his life. As his journey unfolds, he battles against society’s big guns and attempts to bring justice into an unjust world. Along the way, he has many interesting and romantic encounters with the ladies who are charmed by his character. How will he use his superpowers? Will he be able to overcome evil and bring justice to the world?
After a tear in reality pulls Kagari Shuya into a white room he discovers a futuristic interface for reincarnating in a different world. After looking through the different races and skills he unlocks a new race, Lucivault, a type of vampire with none of its characteristic weaknesses. All set to start his life in a new world, Shuya is confused to discover that he is enveloped in darkness. As it turns out something went wrong when he was transported and instead of appearing where he was supposed to, he appeared in an underground cave. Shuya faces untold dangers, runs for his life, before finding his way out of the underground world. After escaping he meets his Shishou and begins to learn to fight with a spear. There is also a cute black cat named Rollo.
At the age of 15, He Jin found himself a “husband” in an online game, their love was filled with loving affection and sweetness. However, because his study was being interfered with, his parent cut off the internet, he didn’t even have a chance to say goodbye and had to disappear from the game. 8 years later, the online game in the past was about to come out with a revised edition and turned into a virtual reality game. He Jin decided to login again and unexpectedly discovered that his “husband” had become a powerful player and ranked number one in the whole server, moreover, he had not divorced him! However, the husband that was abandoned by He Jin for eight years, his initial impression of him was that of a pure boy, but now he seemed to somehow have become…….a little evil?