Hajiki’s school attendance problem is causing him trouble, but his life only gets more complicated when Hachisuka assigns him to deliver 100 wedding invitations.
I guess penthouse
means it's on the top floor.
بما أنها شقة بنتهاوس فهذا 
.يعني أنها في الطابق العلوي
Penthouse heißt wohl,
dass es im obersten Stockwerk ist.