This was probably my favourite episode so far. I liked Yuu actually doing something for someone and I like him a lot more than I ever did with his dick attitude from the start. I also really liked how the ending scene with Sala singing and no other noise, not Nao’s brother screaming, not Yuu, no music, bugs, birds, etc. Just watching it while the music played was great.
One thing I do hope they don’t continue (although not really an issue just feels lazy to me) is characters that look like someone from Angel Beats! and share the same voice actor and even bits of their personality. I don’t think there will be too many more characters introduced at this point so I doubt it will continue but you never know.
Something I forgot to write! I also don’t think Sala is the Tomari’s benefactor anymore. Unless she was faking for some reason she didn’t seem to know anything about their situation (also why wouldn’t they have thought to try the singing before?)