Both jeff and justin. they were honestly both becoming good people and learning from their mistakes. no one deserves death not even the worst people. they really just need to learn what theyve done wrong. i think jeff, justin and hannah were the people that kept clay together and maybe if they hadnt past away or just got sick then maybe his mental health would have been a little better because imagine losing everyone who meant everything to you in the span of what 2-3 years and at such a young age.
@Dudebro92 the showrunner were considering having Hannah being in a coma instead and then coming back to life in the end of season 1 so thats not really true. But anyway to answer the question Jeff, because he just seems so nice and brings out the best in Clay and deserved way better