Kaisoo fanfic idea. What do you guys think?

Jongin and Kyungsoo were both once lovers a long time ago. They were in the war and fought for South Korea against North Korea's attacks in an attempt to conquer the land. (I made this war up. Not even sure if there was one or not in real life XP). They both died due to a huge explosion around their camp area. They were reincarnated again in the present day and Kyungsoo can remember his past perfectly and his feelings were still strong and intact. The only downside to his feelings was that Jongin was no other than his birth Father and he didn't have any memories of their past. Kyungsoo wounded up hiding his love for Jongin in an attempt to keep their father and son relationship going. He eventually came out to Jongin as gay and got himself a boyfriend to dull the pain of having to see Jongin every day but not being able to do anything about his heart's desire to kiss the elder. 

He was so busy trying to conceal his own feelings that he failed to notice Jongin's anger towards him for putting his boyfriend first. He also failed to notice Jongin's jealousy towards his boyfriend.

Is it okay? Is it fanfic worthy? I promise I have not read anything like this before anywhere that relates to Kaisoo. I've read a few kaisoo but not like this. Tell me if you've read any kaisoo like this so that I won't have to go through the trouble of posting and having my work thought as plagiarism. 

This might be rated....I haven't decided on that yet.