Please Help!!! Looking for a Specific Yaoi Manga

So this might be a toughie but I'm still gonna take a chance!

I found this yaoi manga in audio form on YouTube a long time ago, like 2016 long time ago. Anyway, it got taken down as YouTube always does but got reuploaded by someone else until, once again, YouTube took it down.

This has always been my favorite manga ever since but I can never remember the name, just the plot because it resinated with me. So if I could have the help finding it through the plot, that would be amazing!!!

So, here's the plot: the MC is apart of a very prestigious family but is treated like crap by his Half-Brother and the rest of the servants because the MC is the bastard of the family.

One day, his Half-Brother kidnaps the Love Interest because Love Interest is the heir to their rival company. Half-Brother makes Love Interest go blind and MC begs his Half-Brother to let him heal Love Interest because he's in love with Love Interest (the MC knows him from school btw.) Half-Brother agrees and every day MC does his best to heal Love Interest's eyes. Love Interest falls in love with MC even though he doesn't know MC's name or face. Eventually, MC has decided that Love Interest has healed enough (though still not enough to know it's him) and help's him escape his half-brother's clutches.

When Love Interest finally heals, he goes back to the field his savior (the MC) freed him in. He meets MC who is basically sulking and the two chat for awhile when Love Interest reveals he's leaving the country for 5 years. MC says he doesn't care and when Love Interest leaves, he breaks down crying.

So that's Act 1 of the audio drama and I can keep going if people need me to but the story is so juicy that I don't want to spoil anymore unless people need more info so I hope that's enough to get people looking for it. Again, I'd be overjoyed if anyone found it because I've been looking for years so please help as much as you can! ♡