Hina cries as she dreams of her late, beloved grandfather once again, but the next day—only the fifth left in the whole world—she’s her usual cheerful self as Sora shoots footage for the “making of” movie. Watching Hina interact with the others, he can’t help but want to know more about her.
If the world is to end as she says, he feels they’d be parting far too soon for his taste. So he asks his parents, and they’re refreshingly open with him. Hina isn’t a relation, but the granddaughter of a teacher and mentor to both of them. Her mother passed away, her father abandoned her, so gramps is all she had.
When he died, he made sure arrangements were made, dressing her up in conspicuous clothes so Youta’s parents would know it was her. They gladly took their mentor’s granddaughter in, but it’s up to Hina—and Youta—how long her stay lasts. It’s interesting to note that at no point do Youta’s parents mention the countdown to the end of the world.
The next day, Hina is ready for video games when Youta tells her he wants to find her real father. Hina is not nearly as enthusiastic about this, but if Youta thinks it will help him learn more about her, she’s game, and helps him locate his current residence. It just happens to be by the ocean, which Hina has never seen, so there’s a built-in incentive for her to come.
Youta comments that it almost feels like they’re eloping, but for the bento boxes his mom prepared for them. After a train ride, a bus ride, and a bit of a walk, they finally arrive at what looks like a dream house. Hina’s father guardedly welcomes them in. For a moment Youta believes neither her dad nor his wife can see Hina, but she merely requested a different kind of tea.
In truth they can see her just fine; they just have no idea the girl with lilac hair in nun cosplay is Hina. When Youta clarifies that it is indeed her, her father reacts as if he’s seen a ghost, while his wife drops her royal milk tea and completely loses it.
Hina’s dad moves their conversation to the beach and has Hina play with the family dog while he explains his shock to Youta. You see, he only knew Hina until age 7. All her life to that point, she suffered from the hereditary condition known as Logos Syndrome, which negatively affected both the brain and the muscles.
The last time he saw her she could barely stand or speak. As he tries to sort through his swirling emotions, part of him feels he should be angry, telling Youta how cruel it is to show him a healthy, happy Hina he had, to be perfectly frank, left for dead, and replaced with a new wife and kids. When Youta asks if there’s any way the father and Hina can reunite, he says it’s impossible.
Hina’s father already cut that bond, and every time an increasingly agitated Youta tries to take him to task for that—Your daughter is right there!, and such—he responds with “You’re young; you wouldn’t understand.” Youta admits he doesn’t, but Hina’s father says the time will come when he will. There is no cure or treatment for Logos, and he considers the luster of the miracle of a healthy Hina to be fleeting.
Hina has nothing to say to her biological father, so she and Youta take their leave. On the bus to the hotel where they’ll spend the night before returning home, Youta wonders what the point of the trip was. He’s pretty sure he would have preferred to remain ignorant of the existence of Hina’s father, just as he probably would have preferred not to know Hina still lived.
As for Hina, she’s her usual joyous, laughing self, playing with her food then getting excited about vintage Space Invaders in the rec room. When she notes Youta’s constant glum expression, she reminds him the world is about to end, which should be cause not to panic or despair, but to not worry about what one cannot control.
Youta has come to love Hina, as I have, but it sure looks like she’ll be a goner in four days. The rest of the world won’t end; Hina’s father and his happy family, Youta, Sora, their parents, Ashura, Kyouko, Kakou…they’ll all live on. Only Hina, who “became a god” 335 days ago, won’t be around in four more. But like Youta, I don’t want that, and I don’t want to believe her father.
Perhaps whatever treatment her grandfather administered allowed her to live for 339 days and no more. Or maybe Youta, possibly aided by Suzuki (who visits Hina’s dad that same night) and others, could end up saving her, delaying the end of her world indefinitely. One can hope…