Thanks for clarifying. I translated it like that because saying "I'll insert/put it inside you" wouldn't sound good, but your translation is better.
I went with "to ejaculate" as the meaning of ??? considering the situation.
I'm not sure if ??? is his name, I compared the ? with pic related which is the previous image of this set and has both a normal and a small ?, so I thought it was the noun or adjective, but I couldn't make sense of what's being said if that's the case. It does make more sense if that's the bottom's name.
In any case, thank you for your help anon. If you don't mind, could you also tell me what you think of my translation for pic related?
That's right. Also, your clear tan line is sexy, isn't it?"
I had a hard time deciding how to translate ???, but I think it makes sense like this.
This image is the one that made me think that the second bubble in the other one was the guy saying he made the bottom come already, since you can see cum dribbling and a big stain on his underwear.