Kyojuro's mother is your older sister..you are the last child of your mother..so you are only a few years older than your own nephew Kyojuro..At that time you were studying near Rengoku's residence.. until you had a 2 week holiday from your campus

You decided to visit Rengoku's family and visit your two nephews... to see their condition after 10 years of being abandoned by their mother..who is your late big sister

Are you planning to stay for a few days or maybe you want to spend your vacation with them? they will definitely welcome you..knowing you are very good at cooking so they will be waiting for the chef

gate bell rings

when you press the bell..with the suitcase beside you