Translation taken from here. Credit goes to Zysora & Felix Lawin.
Eh-Do not lose it again.It was in the cafeteria.It is something valuable, is it not?Bring out thy head.Missing something?This must be only gramps scolding me...!This is just gramps scolding me...I'll get scolded with "You lost something like that?"......Oh?Thank you, gramps...!!Awawaah...What should I do...I can't get to places if I don't have it...Ye...Yeah, something like that...I might've lost my keycard that I use all the time...Keycard