Ruby's trip was going to be a week later, so for seven days, Ryuki didn't have anything to do.
He did want to talk and be more friendly with Ruby, but if he did, Riko would notice right away.
He didn't want that girl to know this, so he was talking more with Ruby but not that much that he would attract Riko's attention.
After school, he returned to his house. He didn't go to cooking class since Hikari and Aoi were gone for a few days, and Yua just wanted to focus on fried noodles.
Ryuki helped her a few times, but he wouldn't help her every time. She needed to learn herself without him.
As for his Yokai Club, then Ryuki, Yuta, Nana, and Ami went to Yokai World and killed a few Yokais.
Then Ryuki and Yuta went battlefield to absorb AE. They absorb energy regularly and get stronger and stronger, but nowhere enough to beat Nana and Ami.
