No means stop. Stop means stop. If your character continues despite these protests it's rape, regardless of the universe setting. When you attempt to romanticize this, you are perpetuating rape culture.
First of all, thank you so much for this translation!
Second, I quite not enjoy omegaverse. I always give it a shot in case I may find somethig really cute like 'Tadaima, Okaeri' but this one was pretty ugh.
The rape part is something that I got disgustingly accustomed to so I'm not going to put it as the 'ugly part', BUT THE PART ABOUT LOOSING HIS JOB. And Reiji offered to take care of him because it is what is expected of their relationship. Also very toxic all that shitty thing about being possessive because you love them ¬-¬. I only tolerate so much of this stupidity in one single manga. It is omegaverse, after all