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No worries :) I'm reffering to the last shot of Chika's phone in the last chapter, a chat between him and Kurisu.
http://www.mangago.zone/read-manga/blue_sky_complex/mh/mpn_chapter-2209750/pg-46/
But in the last panel of the last chapter we see that Chika has seen messages from Kurisu from back when they were in driver's training together. We can see that Kurisu was really set on becoming Chika's friend and asking all these trivial questions, but I dont really know If Chika really responded back or not. When they meet again, Chika doesn't really remember Kurisu.
The last panel shows us that Chika at least understands that Kurisu is not a complete dickhead, because he was sending him messages even if Chika never responded back.
This is at least what I get from that shot of his phone, and I might be wrong ( ̄∇ ̄")
awww I wanted to some more scenes of him getting beat up. Too bad. Well, the last panel where chika shows the messages that were sent kinda made me not so pissed off at the dude.