I completely get what you’re saying, but you also have to remember the situation they’re in right now. Why shinwoo wanted to die was because he felt like he had no one left, he didn’t have anyone alive that cared for him anymore and essentially deemed his life “ruined.” Since the beginning of the story he’s subconsciously been gaining that relationship he was so desperately seeking, taebaek was giving him a will to live without him even realizing it. His depression didn’t simple “go away,” and it shows that when he first opened up to taebaek about it. Up until that moment he still had that mindset because he’s been dealing with that weight of “my life is helpless I need to restart” for almost his entire life, shinwoo felt helpless because he had no one, but taebaek filled the void for him. It took him so long to realize because of that reason, even now, there’s no proof that he simply got “cured” from these feelings, but instead, it shows the hope that he felt because taebaek showed him a glimpse of a life he thought he had to kill himself and be reborn to fulfill. Because shinwoo never realized these feelings before it might seem like he simply felt better because of what taebaek said, but in reality it wasn’t just because of that at all. The reason why he couldn’t reach the state he’s in now was because of that mindset he had, he most likely isolated himself when he stoped serving and/or didn’t build deep connections with people, because he knew in the end all he wanted to do was die. Having him thrusted into a situation like this with someone like taebaek helped him reach the point where he’s at right now. Saying that his depression isn’t realistic because of this is just blatantly wrong, especially because everyone’s depression is different (coming from someone who has lived through years of it) also factoring the fact that this story is highly unrealistic I feel like the author did a good job with it idk ٩(๑❛ᴗ❛๑)۶ (also this could very much change and just be a glimmer of hope that eventually flares away so who knows what the author has in-store for shinwoo) but again I completely understand where you’re coming from (=・ω・=)

I was disappointed about chapter 58. It just doesn’t feel like it makes sense for someone with severe depression and suicidal ideation from the age of 10 to magically realize that everything is fine because someone told them that life was actually good.
That level of depression doesn’t work like that. It just sort of cheapened his character because he was someone who was still experiencing that ideation his entire life and after building happiness with a partner, but all it took was him basically saying “life isn’t as bad as you think” for all of that to go away. If it was that easy, it would have happened before the story started.It would have been better for him to choose to live while fighting his depression than have it magically poof