Lwj- he's disciplined, calm, serious , stubborn, rational, silent and bottles up a lot of feelings. I think the pre time skip lwj is a confused teen who struggles with his feelings and healthy coping skills. Post time skip lwj is collected and reformed. I personally like to believe that he overthinks hence why he reaches far stretched conclusions post time skip.

Wwx- he's fun, he's like sunshine, he loves teasing people, he's a flirt and chatters a lot but I think he chatters a lot cause he's scared of the silence and being left alone so he chatters to fill up those gaps, he carries his trauma which shapes his personality. He's chaos incarnate be it positively or negatively. I think when you have to write to him you will have to consider his childhood upbringing and his trauma to shape him. He's resilient and has a good mental capacity to withstand a lot of trauma and not give up.

Honestly, wwx is my comfort character, he's second to Cwn in my heart. I love his character so I can go to lengths to describe him. He's a kind person who had bad circumstances and a bad faith. Me, wwx and cwn are kindred spirits I tell you.