MTL - Rival In Love Says He Must Marry Me - Chapter 591 I am your ancestor!

Xia Yan passed through to the world of Bleach and became an eleven-year-old boy. He was rescued by Renji and Rukia in the Seireitei, and he was studying at Shin’ō Academy, and he was a student of the same class.
He is a top student of the Shin’ō Academy, and he is vying for strength by various teams. In the end, he has entered the first team of secret mobile maneuvers.
He will use punishment to kill every person who tries to threaten the martyrdom and protect his loved one.

- Description from Novelupdates

As he transmigrates across the continent of Douqi, Gu He takes on the mantle of Alchemy King Gu He and gains an incredible power - the Ten Thousandfold disciple cashback system. This allows him to grant gifts to his disciples, which are then returned ten thousandfold.“You have gifted Liu Ling the Green Lotus Core Flame, triggering a tenfold return and granting you the mighty Green Lotus Holy Fire!” the system announces as each gift brings Gu He greater power.After three years of intense training, Xiao Yan returns proudly to the Yunlan Sect, eager to display his newfound strength.“Don't underestimate this once poor youth!” he warns his former lover Nalan Yanran. “Today I'll show you what a true genius can do!”But Nalan Yanran just smiles faintly. “Is that so?” she asks, as a terrifying Dou Emperor aura suddenly surges from her.Shocked, Xiao Yan stammers in disbelief, “How did you become a Dou Emperor powerhouse?”With an arrogant smile, Nalan Yanran replies, “With my master, anything is possible.”

Shao Ci was bound to the ‘Befriending the Most Powerful Person’ system. After crossing through, only then did he discovered that as long as a more powerful person emerge, this unscrupulous system will immediately change the ‘capture’ target….

- Description from Novelupdates

Mistaken by the system, Xiao Jinsheng, who transmigrated into an apocalyptic book world, becomes a malicious supporting female character who has competed with the protagonist since childhood.As compensation, the system promises to assign Xiao Jinsheng five handsome and mighty bodyguards.A mysterious and stunning snake-man with long violet hair, a proud and sharp-tongued cat-eared youth, a charismatic black panther youth brimming with raw energy, a gentle and thoughtful sheep-man 'mommy,' and an elegant, noble Dragon Sparrow Beast Husband ready to fly her to victory.With just one glance, Xiao Jinsheng recognizes these men as her long-lost husbands.The system tempts her: punch the first button and get five gorgeous husbands, letting you revel in a life of love and luxury.“11111!” Xiao Jinsheng frantically presses her fingers onto her 'husband’s' abs on the poster.But who would have guessed that even systems lie these days?Where are the promised gorgeous and devoted husbands? What she receives instead are five executioners!The enigmatic snake husband suffers abuse and is sold off to the black market; after escaping, he only lives to kill her.The cat-eared youth files for divorce daily, the dashing black panther youth terrifies her with bloody threats, the noble Dragon Sparrow avoids her like the plague, and even the seemingly gentle sheep-man 'mommy' turns out to be a wolf in sheep’s clothing.Xiao Jinsheng treads on thin ice, relying on the world’s mechanism where a Beast Husband must follow his wife in death to ensure these murderous husbands can’t harm her.She works hard to strengthen herself. Meanwhile, on the other side of the Mist Continent, a Demon Lord is deeply devoted to her, the King of the Deep Sea Mermaids falls for her at first sight, and even the Silver Dragon of Cloud Island stubbornly camps in front of her door.The five Beast Husbands, who were initially clamoring for divorce, drop to their knees with a slippery slide, now refusing to separate even in death.