The most logical choice would be to try the keys, but normal people logic is never the Aiba way, isn't it? 😓 And since you are so mean to stress again that Sho is a "friend" at the beginning of this chapter 💔, why don't we start looking for the others (this may not be a Sakuraiba, but an Aimiya is equally great *wink wink*)

I am going to pick b). Let's get Aiba upstairs. Maybe he can find another member there. Oh, wait, please don't tell me in the next chapter that the cat is upstairs. Nooo~ LoL

Thanks for writing this, this is super fun *hugs and kisses*