Although Henry's never told Marty much about his childhood, now he wants his son to know more about his background and the experiences he went through.
Henry goes to the Panama Hotel and speaks to a woman about going through the old belongings that were found.
She tells him to write the family name on a clipboard and that he can go down and look for belongings that were left behind.
Henry puts down the name Okabe, which is Keiko's name. Is he still into her after all this time? Always.