DxD: Building A Demon Clan From Scratch. - Chapter 123: All-knowing Rias

Haruto Hayase was a normal high school boy in his third year, living a quiet life until his younger sister, Haruka Hayase, joined the same school. Haruka’s beauty and charm made her the center of attention, quickly becoming the school’s prima donna. But when a notorious gang leader set his sights on her, he did everything in his power to protect her—only to fail tragically. Haruka was brutally assaulted and tortured, and Haruto himself suffered an agonizing death. However, in a twist of fate, Haruto is given a second chance, waking up a year before the events that shattered his life. Armed with the mysterious ‘Debauchery System Slave’, he vows to exact revenge on those responsible. This time, he will use his newfound powers of the system and charm to seduce the loved ones of his enemies. From their mothers, sisters, and lovers to their closest friends, Haruto will make them his. His enemies will suffer as he steals what they hold dearest, ensuring their downfall in the most devastating way possible.

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

On her wedding night, Jian Ran met Zhou Huai'an, the man rumored not to like women.After that, she was cautious and humble in front of Xu Zichuan every day.Until that night, when blood flowed and rain poured, she learned the truth.She collapsed in the pouring rain, hugging herself, laughing madly with tears streaming down her face.Then, she slowly bent her proud spine, trampling her dignity into the mud.In the end, when Jian Ran left, Xu Zichuan went mad.Zhou Huai'an kneeled on the ground, “Jian Ran, I was wrong. What must I do for you to return to my side?”

Introduction 1: The villagers, when mentioning Zhuang Qingning who had no parents, then fell ill and chose to live on her own rather than being fostered by her uncle's family, they sighed and shook their heads, thinking she was paving her own way to death.But who would have thought, she started a workshop, bought a shop, built a house, lived comfortably raising dogs and cats, and everyone who got close to her flourished financially?The villagers: Is it too late to get in good graces with the God of Wealth now? Awaiting your response, it's quite urgent......----Introduction 2: Everyone in the capital city sighed over the good fortune of the Prince Qi, who was unparalleled in his beauty, for he followed the wishes of the late queen and married an ordinary rural girl, thereby giving up an ideal marriage.But who would have thought, the prince was so considerate of his wife, spent fortune to bring a smile to her face, defied orders just to protect her, totally behaving like a man deeply in love......All the people: Excuse me, is it too late to start shipping this couple now?----This story is about a rural woman growing step by step, expressing warmth, lightness, encountering thorny paths and joyful achievements alike, where lovers eventually marry, and there is retribution for good and evil.