Semantic Error is a Manhwa (Korean comic). I don't know where Semantic Error is set at, the tv show is set at South Korea, so I will be using South Korea laws to see if it's against the law. Please correct me if I'm wrong. 

South Korea Workplace Harassment 
In Section 2 of Article 76, the amended LSA defines “workplace harassment” as “an act of an employer (or business owner) or employee (or worker) that causes physical or mental suffering or worsens the working environment of another employee/worker by taking advantage of his/her status or relationship within the workplace beyond the appropriate scope of work. 

Korean definition of stalking 
Stalking (스토킹) is unwanted and/or repeated surveillance by an individual or group toward another person. Stalking behaviors are interrelated to harassment and intimidation and may include following the victim in person or monitoring them.

https://ogletree.com/international-employment-update/articles/november-2019/south-korea/2019-10-31/south-koreas-new-workplace-harassment-laws/

http://www.koreanlii.or.kr/w/index.php/Stalking?ckattempt=1 

 

He sexually assaulted a neighbor when she was drunk and took advantage of her.

Also "wearing daring clothes", the panel is angled were you can see the women's vu***. In any other angle you would never be able to see it or with any other clothing at all.

"That can catch attention" I'm pretty sure you didn't mean it this way but your victim blaming right now.

"He knows how to control himself" Yeah because groping a woman in her sleep while she is drunk is self control. 

"he is holding it too much" He can hire a escort, instead of S.Aing a literal drunk woman.

Sorry I forgot to edit the first part of my recent comment. But I meant I agreed with you, I just didn't know what your intentions were in the beginning and I wasn't in reading mode, when your other replies came up. So sorry about that. I don't want to argue anymore. 

Just gave a good weekend/day. :)

Well in real life, (just in any country really) the police usually doesn't believe the victim for the fact that the victim is male. Male victims are specially discouraged by this, considering most people who tell them that didn't actually happen to them are family members or/and close friends. It's just the fear of not being believed, specially if someone doesn't help, then the victim can't really do anything about the stalker and live in constant fear. They're male victims who get help from family members, friends, or the police with those type of  situations.

I just wanna say towards the other replies, that it's still creepy to me and counts as grooming for the fact that they met when he was 16 years old which is considered as a kid in a lot of states and the other guy is a 20 year old which is a adult. Considering they probably been friends for 4 years, the 20 year old might've catched feelings for him in that time. It's like a teacher having feelings for a student and then when they're of legal age, they start dating the student. It's gross and weird.

Whadda mean "if"? There is no if!

I'm pretty sure he's in his 20s, being small doesn't go with someone's age. He's just shorter than the rest of the guys and has lower body mass. If anything that's pretty normal.