The Academy's Strongest Undercover Professor - Chapter 17 - 16 - Threat

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

[Warning: r18+/strong mature content]He is her salvation. She, his demise. Yet, he refuses to let her go…Mineah, the youngest Princess of Ebodia, was cursed at birth to remain untainted and bring misfortune to those around her. This prophecy looms over her like a dark cloud, growing bigger every year it does not come to pass.She exists in hushed rumors as a pitiful figure - fragile, meek, unwanted. Underneath that mask is a strong and feisty vixen worthy of being a queen. And this would-be queen has set her eyes on breaking her curse, even if that means tricking the most cunning vampire ever born.Nikolai, though reclusive and enigmatic, is revered by the Kingdom of Valcrez as a wise and powerful ruler. Unbeknownst to his loyal subjects, his image of perfection is a web of lies that if exposed can send their kingdom and everything they hold dear crumbling beneath their feet.When these two find their paths crossed in a marriage alliance, the game of Crown's Seduction begins. But just who is the hunter and who is the prey?********Excerpt:“Why are you stripping naked in front of me?” she questioned with a frown, doing little to hide the irritation in her voice. Her goal was to capture only his heart, not his whole body!“Am I not allowed to have a bath with my wife?” he remarked with a cold tone. “I purposely asked for a big tub to just make sure that the two of us will fit in it together.”She sighed, not tearing her gaze away from him as she regained her composure. Seeing him smirk she forced herself to get comfortable as he spoke.“That’s more like it. You said it yourself that no one forced you into marrying me. Instead, you offered and volunteered yourself willingly for it, so I expect that you’ll be confident enough to share a bath with your husband,” Nikolai confidently stated. “After all, we’ll do more than this soon enough.”Shameless…Preventing herself from rolling her eyes, she managed to give him a smile as she said, “Don’t blame me if you die on me then.”

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

my name is Vexsus but you can just call me Vex

I was a human previously like all Isekai protaganists except this time i was reborn as a monster. Join me in my adventures as i discover and explore not only my new body but also this new world i'm thrust into.