A year has passed since Mizuho left Earth. Everything changed and people have fogotten about her. But thanks to her mother and her sister's help, she returns to Earth and this time, she's staying at Earth for good. As she becomes a teacher once more, she introduce herself which is similiar to Episode 1.
She moves in at the same neighbourhood with Kei and even helps her carry the stuffs. But the differenece is that they switch sides and Mizuho tripped and fell onto Kei. She cried while not facing him and intend to tell him everything but to her surprised, she was shocked that he ask whether she's doing another planetary research.
When he manages to answer her first date (in episode 5), he manage to answer it. He tells him that he's been holding her Pochy box even since she left and after seeing her, he remebers it. She cried while Kei intend to be with her forever. The finale ends by each others kiss while her sister and her mom were happy to see it. Now they are together once more.moreless