Responses

yup that was ch 17. don't forget too that jin said that sunhwa is all he has as well and that after jin left, sunhwa said that he actually got hard from all of that for some reason even though he was scared. so who knows? he might be a masochist? still wondering what their plan was though on how they dealt with that guy who copied sunhwa's painting.
So I'm back with the bought chapter again and this confirms that the black haired dude in the past is mentally unstable.
SPOILERS
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So Sunbae is seen with his creepy ass yellow eyes as he stares into SunHwa's soul while asking if he loves him. Sun Hwa realizes that Sunbae's looking at him differently from how he usually does and that scares him. Sunbae starts to squeeze Sun Hwa's shoulder tightly to the point where he's in pain just because he avoided saying "I love you." Sunbae shows no remorse or emotion even after Sun Hwa shows he's in pain and he throws him into a bathroom stall where he proceeds to choke Sun Hwa. Sunbae tells him to call him by his real name as he uses his foot to fondle Sun Hwa though he shows pain. Sunbae then forces Sun Hwa to suck him off with this crazy creepy look as he tells him to call him Jin Kyo Hyung. When Sun Hwa stops sucking him off, Jin looks upset until he says that it hurts. Jin then looks pleased and says "It doesn't look like it only hurts." Jin then proceeds to talk in a degrading matter to Sun Hwa and says shit like "Just say you love me. I'm all you have, right?" He jerks off on Sun Hwa and says "Don't disappoint me. I don't want to get angry with you." Then he says "I love you" and leaves the stall. The chapter ends with Sun Hwa acknowledging the fact that there was something more aggressive and wrong with Jin and the usual logo for "The baker on the first floor" was tainted black.
The tainted black logo seems like a huge piece of symbolism to me because I think we all knew from the start that there was something wrong with the blonde guy but it never really gave too many hints of the story going dark. The logo becoming enveloped with black spots seems to symbolize the story slowly becoming more contaminated and toxic for this chapter clearly represented a toxic relationship.
Again, that's just my take on it ╮( ̄▽ ̄)╭ I purchased more coins today so I'll be able to buy more chapters for a long time.