Well most of the plot is quite obvious even without translation. The only plot point I don't understand (without translation) is the final part.
My guess is Satori uses mind read to see that Patchy is no longer depressed by the shitheads. But Patchy still can't let go of the death of her friends. She looks happy on the surface but thanks to her mind reading, Satori knows that Patchy still depressed by their deaths. And Satori knows how she feels because she also can't let go of Koishi's death. Satori ends being a bit bittersweet because even when they're married with kids now both of them will never be 100% happy because neither can let go of the deaths of their former loved ones.
