It popped up at the bottom of his field of view during a slow bit so as not to unduly distract him or block his view! It rises into his line of sight.

Clicky.

Skill: Gymnastikos

At a BKL cost scaling with the difficulty of the task, you can succeed at a feat of athleticism or acrobatics, as long as you are nude or otherwise dressed in such a way as to cause erotic jiggles. You are summarily immune to non-erotic jiggles.

Example tasks and costs include 100%ing an unreasonably difficult Beat Saber song (1 BKL), dodging a small-caliber bullet (50 BKL), or point-blank dodging the explosion of a full-sized Volcanic Range golem (1000 BKL).

Ignoring the bit about erotic jiggles, thanks muchly, and...

...he doesn't want to use a game skill to beat a Beat Saber level, he wants to do that by the sweat on his skin. The Volcanic Range thing is probably good though, except, "What would the equivalents under this system be of just tanking the bullet and the explosion, in BKL?"

Depending on the bullet, anywhere from 40 to 100. Depending on the golem, anywhere from 2800 to 3500.

"Probably not worth it for the bullet, but... hm. What counts as 'dressed in such a way as to cause erotic jiggles,' exactly? Would it all be things that would get me fined for public indecency and prevented from going to some international dungeons or, what am I working with, here?"

Oh the game has triggered Tae-gun's munchkin mode. This is going to be funny to watch.

As your ERO increases, you may find that fewer things will be counted as public indecency. Especially for you in particular.

That being said, no, as long as you are dressed enticingly and in a manner that will lend itself to acrobatics you can use the skill. Sweatpants would do it if they said JUICY across the ass.

"Oh you're making the autistic face. Sunbae, I think I can dress you, don't worry."

"—I'm not autistic!"

"Now is not the time for you to be dense and unselfaware, sunbae. All we gotta do is dress you sexy, is the point. ...sexier than your Indiana Jones vibes with the chest harness, I mean."

"...than my what?"

"Really old movie series, don't worry about it."

Thoughts of Lee Tae-gun with a whip aside, there is a tutorial to complete.

The final item of the tutorial is to learn about perks. You do not have any perk points yet, as they are granted every five levels. But you can take a look through the perk menu anyway!

"—perks like that thing with the backlash. Those?" He does not like the idea of there being more of those. He clicks anyway because he's not a coward.

"Sunbae I'm gonna make us breakfast," Woo-young announces. "Read stuff aloud for me."