Il-Woo's father was probably the one BaekHee's father killed (which got him in jail). That's why he practises stabbing, he came planning to kill his father's murderer once he got out of jail and then take his own life afterwards. I'm thinking the narration by them may be a testimony in court or to the police. Because BaekHee's father will probably get out of jail soon or something and Il-Woo WILL stab him, but not for revenge but in order to save BaekHee from him. Il-Woo will go to jail for killing him but it won't be a long sentence it being declared self defense by BaekHee's testimony (which he is narrating and is this story). BaekHee will promise Il-Woo he'll wait for him to come out and make him promise not to do something stupid meanwhile, and when Il-Woo tells him that he can't make him wait X years BaekHee will answer that after ten years in fear for of his father's release, the wait for him to come out and them being together again will be a positive chance and in this case he'll be looking forward that moment. Then we'll have a timeskip and them reuniting when he's let go of, kissing happily ever after.
yeaah, something like this would make sense, in chapter 3 Ilwoo is walking by gicheon trying to remember an specific place he was with someone (maybe his father) so he was in gicheon before but he barely remembers it
Il-Woo's father was probably the one BaekHee's father killed (which got him in jail). That's why he practises stabbing, he came planning to kill his father's murderer once he got out of jail and then take his own life afterwards. I'm thinking the narration by them may be a testimony in court or to the police. Because BaekHee's father will probably get out of jail soon or something and Il-Woo WILL stab him, but not for revenge but in order to save BaekHee from him. Il-Woo will go to jail for killing him but it won't be a long sentence it being declared self defense by BaekHee's testimony (which he is narrating and is this story). BaekHee will promise Il-Woo he'll wait for him to come out and make him promise not to do something stupid meanwhile, and when Il-Woo tells him that he can't make him wait X years BaekHee will answer that after ten years in fear for of his father's release, the wait for him to come out and them being together again will be a positive chance and in this case he'll be looking forward that moment. Then we'll have a timeskip and them reuniting when he's let go of, kissing happily ever after.
I REST MY CASE, YOUR HONOR