A Belobog mechanic who used to be a researcher for the Technology Division of the Architects.
As Gepard Landau's elder sister, her personality stands in stark contrast to her brother's.
She loves an ancient form of music known as “rock 'n' roll” that was popular before the Eternal Freeze.

The free and rebellious eldest daughter of the Landau family. Once a close friend of Cocolia's, she is now a mechanic purely because she likes this job.
In the Everwinter-stricken Belobog, she opened a workshop called “Neverwinter” that puts business on hold from time to time for outdoor rock 'n' roll performances.
And should anyone ask her about the workship's profits… “This is just a hobby, dear. I'm not short on money.”

This is the most talented mechanic in all of Belobog and rock star. Did we mention she's also the sister of Captain Gepard Landau of the Silvermane Guards?

“Stop. Stop that. Keep the first part, and leave out the second part.”
“I'd like you not to gloss over my identity like that… I, Serval Landau, am no one's accessory.”

“… Oh, there's nothing else afterward? Okay. Let me chip in then: If something's broken, drop into the Neverwinter Workshop in the Administrative District to see me, any time.”
“What's that, you wanna hear some rock'n'roll? Well, that's even better — drop into our Neverwinter Workshop in the Administrative District to rock this city — with Mechanical Fever!”

Serval Landau owns a piece of land in the heart of Belobog's Administrative District — the Neverwinter Workshop — where she in theory makes a living from her mechanical repairs.

But to be more precise, almost all of this genius mechanic's time is spent repairing and making improvements to various musical instruments…

“Tsk, don't pay any attention to that magazine! I'm a reputable business owner…“
“From geomarrow radiators to car engines — or even a Silvermane automaton — it's no trouble at all. As well as maintenance and renovations of ordinary appliances, I also provide a modding service.”
“Like fitting an external drill bit to a snowplow, or a ballistic trajectory calculator to a toaster… That kinda stuff.”

“Ah? You want to know how's business going? Hey, don't ask so many questions — you know I like to fool around with music in my spare time.”
“Anyway, I never planned on making a fortune… Life's too short. Why not plunge yourself into your hobbies?”

Serval was able to rekindle her passion for music after cutting off all connections with her family.

This led to her prestigious workshop becoming a base for her to rock out — despite suffering constant complaints, this cutting-edge art style from before the Eternal Freeze is still sought out by hordes of hipster kids…

“Oh, I give up! Can you trashy tabloids and your so-called 'music critics' focus on what's important, please? 'Suffering constant complaints'… 'hipster kids'… My fans and I would dispute that!”
“But I suppose it's true that Mechanical Fever is popular with youths — at that age, kids are either full of enthusiasm or underappreciated…“
“No matter what your mood is, you always have to vent sometimes. And rocking out with me just so happens to be the best way of doing that!”

”… Just like what I did back in the day.”
“Ahh, it's fine! Don't worry. I was just suddenly reminiscing about the past…”