Hmmmn.

"No need for that, gimme a minute..." Shoutarou steps away from the counter for a minute or so, pulling out a phone and dialing Philip up to ask about this.*

Soon, Shou closes the phone, then comes back to the counter. "Philip's alright with it - four, one book per shoe sound good?"

--

_{*Checking with Philip and his answer approved by Philip-mun.}