MTL - Problematic Sister Fell In Love With Me - Chapter 1235 】 The reason is here

A young boy genius, Suo Jia, is a water mage who dreams of being a warrior travelling the great and dangerous trade routes to find his lost father that set off on them before Suo Jia was born. Having to look after his sick mother, Suo Jia manages to find a way to solve all their problems, as well as make a name for himself. He gathers nobility, vast wealth, items of great power, knowledge lost to the ages, and exceptionally talented females around him as he plots and plans – preparing to set off on an epic journey that will go down in history as a new legend. However, will others that depend on his powers so much be willing to let him go on such a dangerous journey so easily?

- Description from Novelupdates

Chu Qianze turned the pen in his hand in a circle and smashed it against the drum next to him, the loud drum sound resounding around him.

Facing the two people who looked over at him together, he pulled out a polite smile, which was very dazzling under the neon light.

“I’m sorry, you are ruining my eyes.”

Later:

Feeling the gazes of the people around him, the flashing lights that flared from time to time, and a few gasps, Chu Qianze’s mouth twitched: “Is this a new way to surprise people?”

***

Chu Qianze, who had just arrived in the world and was getting acquainted with his surroundings, was inexplicably pulled by a man and was held in his arms.

“I already have someone I like; it’s him!”

Chu Qianze looked at the person blankly, but saw that the other person turned his eyes away, his breath a little disordered.

“..?”

- Description from Novelupdates

The eldest son of the assassin aristocrat Tuatha Dé.

The skill, experience, knowledge of the previous life, magic, all of which grows his power as an assassin.

Excellent assassins pass through. He was usually admired as the ideal lord, and behind it wielded a blade as an assassin aristocrat.

Zhong Qing is expected to die because she was suffering from an incurable disease but she will come back from the dead and will wake up into magical white space called SYSTEM that which revealed her hidden secret. She will become a LITTLE GOBLIN!

Before the task, the system is indifferent.

“Your mission is to accompany the man and help him onto his peak life”

But after the task, she felt love and indignation.

“You get out, system! I thought I would only accompany and help him, you didn’t say that I would fall in love with him!”

The system silently acts dead.

The man also already fell in love with Zhong Qing.

“Honey come on, go home with me.”

- Description from Novelupdates