Nice introduction to the Sato's childhood friend. This episode is like an OVA though but it's not bad. There's a bunch of details about her too which is quite nice. Like usual, there's another fight for bento but the battles are getting better. If you can notice, our protagonist is getting improved on combat for each bento. Let's just hope that the next episode will be good. Since this is OVA like, I don't really have further comments but it's a must watch.
Conclusion: Nicely done on character introduction for Sato's childhood friend.