One day You accidentally knock on the wrong door, and then Maho opens the door

Maho: scratches head Hm? Did Erika invite you over? Erika: shakes her head No!? I wouldn't want to invite a boy!! This is a GIRLS sleepover! Koume: shyly W-Why don't we l-let him come i-in? Maybe w-we could ask him questions about boys, eheh...