I tried to post a rough translation of Ch 21, but I don't see it appearing here. Mangago ...

::SPOILER ALERT::
Below is a rough translation of Chapter 21
https://newtoki69.com/webtoon/459552?toon=BL%2FGL
This is a link to the raws of Put A Smile On if you want to follow the images.




This is only the first couple of scenes since mgogog is being not so free with the amount of words in a post.
Scene 1
Jihoon, the redhead (by the way he acts, he might be the Captain, the Catcher, or maybe both of the baseball team)
He enters the TA’s office after hearing sniffling: That's... what...
He goes further into the TA’s office and finds the TA,
Soohyun: Can you help me? Will you please have sex with me?
Jihoon: !!
Soohyun: Jihoon....
Next panel is Jihoon’s baseball cap falling to the floor and what I assume to be sfx for a blowjob
End Scene 1
Scene 2
Junho arrives home. Greets his (I guess it’s his mom or sister): I'm home
Mom: How was it?! Did you bring an umbrella? Did you eat?
Junho: Tired. I'll eat it later
Junho goes to his room and flops down on his bed, thinking he’ll get some rest.
Picks up cell phone. Sfx: Touch Touch
Junho says to a person on his cellphone [Jihoon?]:No matter how much I hate it, should I apologize?
Junho thinking to himself, talking to Lee Kang in his thoughts: Ah... Still, I'd love to contact you.
Lower part of panel. Junho frowning at cellphone:Is that guy just acting, but even if I ignore that, Why am I feeling like this? Do you care?
Junho lying face down, feet hanging half off of bed:Why was it..
Next, it looks like a message with photos or a film clip, which is displayed on Junho’s cell phone. 1st Bubble: On the afternoon of April 10 Around 3:10
While avoiding a police crackdown on drunk driving,
A drunk driver, Mr. A (35) made an illegal turn to his right at the intersection
2nd bubble: Three other cars turning right at the intersection crashed.
3rd bubble: in this accident the people in the last car, a young couple In their 30s, died.
At the time of the accident, the young couple wrapped themselves around their child and together protected him.
Lee Kang: I was able to live thanks to my parents
Picture of Lee Kang all beaten up, sitting on the floor of a dirty dungeon-looking room. The door of the room is padlocked.
Thanks to the parents, their son’s life was saved
This industrious child was a swimmer with a promising future. It was known and created even more regret.
-Junho: Why are you so sorry?!!
Junho: What happened to Lee Kang?!!!

here's the rest






Scene 3 At school Junho enters, looks around hallway, thinking, searching with his eyes: Didn't you [Lee Kang] come here?!
Junho [sitting in classroom]: What is it, You always come first. Why not today?
Professor: Now! Please sit down.I'll start class.
Junho: Already?!
Finally! [class is over]
Junho thinking: Until the end Lee Kang didn’t show up for class.
Junho (still frustrated thoughts): What's this?!!! Why won't you come? I don't think the dog is coming..
Junho lost in thought: What happened to you?
The TA Soohyun appears in the corridor and calls out to Junho: Junho.
Junho: Hmm..!?
Soohyun TA: long time no see. Do you have time right now to talk to me?
Junho looking bewildered, distracted: Talk to you? Ah...what….okay
They go to the Rooftop
Junho: Why did you call me here?
*Soohyun: I like to come up to the roof when I feel like emptying my anger
When I found out about it, I also came to this place.
Junho: What are you talking about....!
Soohyun: A while back, one day I met Lee Kang for the first time.
Soohyun: That moment I can't forget.
[ panel with pic of Lee Kang] Soohyun: At one point, I fell in love.
Soohyun: Why do I want to say this to you? It is a declaration of war.
Soohyun: If you want to continue playing baseball, listen to me. From this moment stay away from Lee Kang. If you do, then I'll pretend not to know
Soohyun: Otherwise. Everything. I will reveal it all.
End Ch 21

You're a true hero!! Thanks for the translation !

Also Lmaaao the story keeps getting worse for Junho, how is he supposed to stay away from the dude who's also threatening him with the exact same thing?

there's one part with about 3 sentences that I just couldn't get, so then I had to cut the translation down so I left them out, but Lee Kang threatens him again. lol I didn't know if it was a flashback or what. It's very brief.
but, yeah, damned if he does and damned if he doesn't LOL