What a fantastic story! His shock in seeing the body of his best friend and the heartbreak from both the time and friendship wasted hits hard. Then, to read that his friend had died trying to save him? (I wasn't tearing up, there was just... something in my eye. Yeah. That was it. 😉)
His attempt in atonement with caring for his friend's family was well done and, though I have a personal issue with someone taking their own life, this is fiction and it fit the story, felt authentic and portrayed the depth of Ren's feelings.