Oh man, the expression on these two dorks just cracked me up, especially when they were eating the takoyaki.
Nice to have the date without any interruptions. Of note, Shi-chan isn't exaggerating to say Tak-kun is her ideal boyfriend. Needs the rest of her backstory to truly understand his impact on her life.
As for why Akarin contacted Takuya, I'll just say it has something to do with the upcoming school festival. What exactly it is should be revealed in the next chapter, but what it's going to get to is the end-of-volume "conflict."