Death March kara Hajimaru Isekai Kyusoukyoku (WN) - Book 1 - 1-5. Fortress City Life Begin!

With his engagement at hand, the most terrifying and legendary person of the legal world, Fu Huai’an, returns with a son.

Before the engagement…

He asks, “Since you love Wen Moshen, why are you in my bed?”
She says, “Because I cannot watch idly as Wen Moshen’s woman enters an engagement with you.”

With a cigarette in Fu Huai’an’s mouth, he crosses his legs. Across the light cloud of smoke, he squints his eyes—watching as Lin Nuan’s slim arms wrap around his neck; he feels stirred.

So a person can love another so passionately.

“You call what you did a kiss?”
“…”
“What a pure lady!”

Fu Huai’an spews out a cloud of smoke and snuffs out the cigarette. With a mellow voice, he says, “Let me teach you what kissing is!”

But, what he teaches Lin Nuan doesn’t seem to be only a kiss…

- Description from Novelupdates

When Arran decides to become a mage, he quickly discovers that magic can be more dangerous than he had ever imagined. Soon, he finds himself hunted for powers he never knew he had.

Scheming female assassin transmigrated to become the weak Eldest Miss, her story is wonderful and stunning, attracting peach flowers to blossom open. Cold calculating emperor? Geniusly bad crown prince? Insidious happy-go-lucky prince? Gentle physician? Ice-cold mystery male? Who is her true love? Haha, but she only eats, definitely will not take responsibility! Beautiful men be careful!

Blondina was a princess with commoner blood in her veins. She lived quietly in the Star Palace among the heavens, but one day, she heals a wounded cat. The cat became a balm to her lonely life. But the lovely cat was actually…

***

Amon stepped on the neck of the prince.

Amon eyes stared coldly at the prince.

“Humans dare threaten mine?”

“I didn’t know… I don’t know, it’s Blondina…”

“Yeah, I don’t know. But I don’t know either. How much power must be adjusted so that you will not die.”

As Blondina, who was watching, grabbed his collar to drag Amon,

Amon turned slowly and laughed at Blondina.

“Don’t worry, Blondina. I will kill anything that bothers you.”

***

What to do with him.

It seems that I picked up a scary creature without my knowledge.