I was talking with one of my friends that wanted to do a solo game, the stuff needed to support a solo player I'm already pretty decent at covering since he'll be using the leader role of the NPC group, but he wants to play a character that goes from the dark side to the light. He's a GM as well so I'm pretty confident about him being able to roleplay well since he wants to go with the type of story where his character is struggling to go from dark to light again.
My question to you wonderful people; How would you handle that type of game? Where a PC in your group either starts as a dark-sider or falls to the dark side and realizes that being a space murder-hobo isn't what it's cracked up to be, how would you handle that kind of storyline? since outside of a 1-v-1 session it risks cutting into the time spent with the rest of the group if that character wants to focus on their redemption.
I've received a bit of advice already but I'd love to hear any examples or stories that you guys have about it.