The chapter was great. One of the reason is that Araij didn't try to cram everything in one chapter, like usual, with a begining and an end. It looks like next chapter will continue right after page 4.
I'm a bit afraid of the resolution of this arc thought. Because I could see Mitsuki picking up the guitar, start playing and then... Well that's it. Trauma resolved, no discussion. Next arc. I hope I'm wrong, but I don't know why, I have this feeling.