I'm blaming the koi-rod chapters for this. Really, it's all those chapters' fault. My undying love for impossible pairings has nothing to do with this.
..ok, so every pic has a little story: the top one refers to the Yoiko episode, here Yoiko has hurt her leg and so her loyal "brother" is helping her; the second one refers to the koi-rod episode, and it really could have happened if Ryoga hadn't been careful; the last one refers to no episode, Ranma just took part in some ceremony for his reason and accidentally bumped into his best enemy.
Ryoga and Ranma belong to Rumiko Takahashi.