Shinwa Densetsu no Eiyuu no Isekaitan - Volume 1, Chapter 1 – Encounter Part 5

Gu Nianzhi had no idea how to get the aloof and handsome Major General to fall in love with her.

His eyes were dark and serious. “…Seduce me. If you can do it, I’m yours.”

Gu Nianzhi: “!!!”

- Description from Novelupdates

For Marco, Lucas is his meek little brother. For the rest of the world, he is the menacing Ghost of Vermil.“Angels endow blessings. Demons sow curses.” A hundred years ago, angels and demons descended on earth. It is said they are still here.Annointed with potent holy power, Marco is set to join the Kingdom's Holy Army to fight off the demonic legion. But before that, he must confront the trail of blood and ash that points to Lucas's involvement with the dark side.As mysteries unfold and loyalties fracture, Marco is faced with the question: where does holiness end and damnation begin? If all lines are blurred and the fate of humanity is at stake, will he have enough resolve to strike down the brother he once swore to protect?

“Let me tell you something honey, Revenge is the best dish served cold.’’****To her, betrayal was the most excruciating pain in the world—the kind that pierced her soul.The people she had loved with her entire heart had not only failed her, but ruthlessly deceived her.“How could you?” she had once cried, her voice shaking as she stared at the man she had chased like a madwoman. But he had already cheated on her—expecting a child with the very woman she despised with every fiber of her being.Her so-called “family ” was no better. The relatives she thought she could trust? They only wanted the inheritance meant for her and her little brother.The people who once smiled sweetly and flattered her? They were nowhere to be found when her glamorous and envious life crumbled to nothing.“I thought you all cared about me...” she whispered bitterly, watching as one by one, they all turned their backs on her when she needed them the most.In that devastating moment, everything became painfully clear. The bubble she had lived in popped and she finally saw their true faces.But....it was too late.Everything she had was gone, slipping through her fingers like sand in the wind.Except for him.Her former fiancé, the one man she had tried to ruin with every scheme she had planned, remained by her side until the end. He stood by her, even as she took her final breath.She had accepted her tragic fate—until something phenomenal happened. She woke up once again.Back to the past.Where nothing had happened yet.

There is always such a person in the world who likes to take their ex/Bai Yueguang/best friend as a stepping stone for their love.
These exes/Bai Yueguang/Girlfriends are called female supporting roles. They obviously did nothing. Just because they were involved with the male and female protagonists, they were trampled on, hurt, and even left a shadow that will never go away for a lifetime.
Jiang centrifugally felt sorry for those innocent girls, so he traveled from one world to another to help them cross that hurdle.
However, after a certain world, the mission is obviously wrong.
Jiang Li: “I will treat you well.”
“It’s not enough.” The girl imprisoned Jiang Li in her arms, breathing warmly: “Don’t leave, you must always be good to me, only to me.”
Jiang Li: ? ? ?
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Finely divided slice attack x natural sweet and soft feeling
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World One: Campus
The taciturn facial paralyzed “bad girl” x the rich lady who is cold on the outside and hot on the inside
World II: Cultivation
Swordsmith x Sword Spirit

World Three: The World of Beasts
Orc Princess x Totem (Big Cat x Little Rabbit)
World Four: Game of Death abo
Tsundere Big Brother x Super Rookie (Double O)

World Five: Spirituality
Ghost King x Rookie Celestial Master
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Edible guide:
#1v1 Unshakable
#Su Shuangwen, everything is for Su Shuang
#gongjing is divided into slices, being indifferent to others, sweet and soft to attacking

Content tags: system sweet text fast wear cool text
Search keywords: protagonist: Jiang Li ┃ supporting role: a lot ┃ others: fast wear, system, sweet text, mutual favor
One sentence introduction: you are sweet

- Description from novelbuddy