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.
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.
Caveat: No translation, can't read Japanese
From what I understand, the final part is a call back to the beginning of the story so this will require some (speculative) context.
1. Patchy's "old" clan was killed by Remilias but its implied that the Remilias were attracted because of the bad Marisas/Reimus. 2. Prior to the Remilia attack, Patchy's "old" clan wanted to kick out the bad Marisas/Reimus but Patchy was unwilling/unable to do so and feels responsible for not kicking them out. 3. Patchy is the slave of the surviving bad Marisas/Reimus because of her guilt/dedication to her "old" clan.
With that in mind, the final part is pretty straight forward.
1. Patchy goes full insane, but is fully aware of it and embraces it by pretending to be scum and calling Satori her slave (ie. the Joker from Batman.) 2. Patchy is fully willing to go along with Anon/Satori's abuse/torture because it lets her think "if I had kicked out the bad Marisas/Reimus from the very beginning my "old" clan would still be alive. 3. Satori loves Patchy in this mindset because it lets her think the same way about Koishi. "If I did X from the very beginning, Koishi would still be with me".