It's nice to have some slice of life side plots besides the time traveling. Thankfully Waka joins for this adventure, it was getting too repetitive with just Mari doing everything. I don't think Faraday's idea of "If you love it you don't need to study it" helps with what Waka's going through, Futa should still stay in school even if he wants to be soccer player. The analogy doesn't even work with his own work besides what we see in the episode.