That's Seo Eyun-hun from Regressor's Tale of Cultivation. Right?

I find this a bit sad. All these misunderstandings. Ah, just kiss her Kayden.

nooooOOOOOOOOO!!!!!!!!!

Look here, that's a baby with a thought bubble of an non-baby. It's a Manhwa by the art style. Just these facts narrow it down to it being either a Reincarnation or Regression novel. And 60% of Manhwa are one of those two. Or romance. But, it's a baby. So no romance.

Damn, it do go hard.

This was not Daijobu. Life is not daijobu anymore.

8????! I need 10!

"Do you have any idea, how little that narrows it down?!"

IMORTAN!! WITNESSSS MEEE!!!

But in the WN, She asked how long will he stay for, as to spar with him. He thinks it once or twice and asks how many time he would have to. She replies with, "A thousand times."
The meaning of 'meeting eachother' got lost either in the translation, or in the LN. Anyway.
The technique Weiss tried to learn and failed was called Hard sword Technique. Known for its unpredictability, is a astonishing technique the MC yearns for. And the part where sword technique capable of permanent debuffing was actually Imperial Swordsmenship, not Gougenki.
Also, in the spar against the no named knight captain, wooden sparring swords were used. I think the illustrator forgot the fact that you don't use actual steel swords in a spar. Against a kid.
And what the knight captain said of not suiting the style is true. You don't use 24 carat diamonds in your kid's Arts and craft class.

Maybe it has something to do with what the Viscount guy said to his knight about the Aston family.

DONT YOU FUCKING DARE!! DONT. YOU. FUCK. ING. DARE.

Oi oi oi, majikayo?!

"Look like meat's back on the menu boys!"

Fyi, A Balalaika is a traditional Russian instrument with a wooden triangle-shaped body and three or rarely four or six strings. "Balalaika" is supposedly a slang term for the Dragunov sniper rifle, which is where Balalaika gets her name due to her utilizing her marksmanship skills with the rifle in Afghanistan, earning her copious amounts of respect from the men under her command.

I literally went, "Aw Fuck. It's back. The Middle Child is Back!!"

Damn! Just stay alive till backup arrives. Then we bout to kick some ass.