In #171, Rogue joins the team. Obviously, given her connection to the Brotherhood of Evil Mutants and her history of mindwiping Carol Danvers, she isn’t greeted with opening arms. These days, the “reforming” of a villain is often handled in a cavalier fashion, without much nuance, but Claremont pilots Rogue’s character arc slowly and deliberately over the next year.
But the main story over these issues is Wolverine’s “marriage” to Mariko, which ends up being derailed after Logan goes to war with her extended Yakuza family. It’s a great story, perhaps best know for the scene where Wolverine kisses Rogue—thereby giving her his healing factor and saving her life. It represents one outlaw-hero’s acceptance of another’s, and says so much in just a few panels.