Hikari is, understandably, a wreck post-Goodbye to Iroha. He is indeed such a wreck that he stops caring about school—or anything else, for that matter—all together. Adding insult to injury is the fact everyone thinks Iroha simply dumped him before splitting town.
After a blow-up with Takanashi, Itou meets Hikari on the roof and gets the scoop—it’s not like Iroha swore him to secrecy about it. One by one his friends and family learn about Iroha’s illness, and can then not only sympathize with him far more, but curse themselves for initially being too hard on him.
The last person to hear the truth is Hikari’s mother, who immediately delivers a swift dropkick to her firstborn. However much pain he’s in, Iroha’s in more, and his mom thinks she’d be even more sad if she knew what became of him.
Hikari fully agrees, and starts to shape up. He returns to school and studies night and day, much to the relief of his friends. When he learns he got into Tokyo U, he shows no emotion, leading the others to think he didn’t get in, and are there to support him. Turns out he did get in, but he hasn’t a clue where to go from here. Hearkening back to his last night with Iroha, Hikari remembers the final promise Iroha asks of him: “forget me.”
It’s a promise he hasn’t been able to keep, and more to the point doesn’t want to. But Iroha at the time is certain that someone as blessed as Hikari has been—with a loving family and dear friends—he’ll make so many happy new memories in the future, they’ll hardly be any for…his first love? Uhhhh…that’s wishful thinking right there, Iro-han! Still, there’s only one way, and it’s forward.
Fast-forward—seven frikkin’ years!—and Hikari is now 25 and a salaryman at a trading company on the rise. A number of female co-workers admire his combination of work ethic and humility and seem interested in him, but he always seems to dash off after work.
On this particular night, it’s to catch an anime, but not just any anime: one in which Itou did the mechanical design! He then gets a call from Takanashi inviting him out to drinks with “Arisa” and Itou in his usual Takanashi way that brooks no argument. Turns out there’s a good reason for that: Arisa and he announce that she’s going to have a baby.
Hikari, clearly far more comfortable in his 25-year-old skin, confidently picks up the check when he has to leave to fix a problem at work. His friends are impressed by how far he’s come; Takanashi even goes so far as to call him amazing!
And he has, especially when you consider the pain he carries from losing his first and only love. Ezomichi pays him the first visit in ages, but despite the pain in his heart—which he carries gladly rather than face an alternate past where he never met Iroha at all—there’s really no need for her to counsel him, and she vanishes—possibly to wherever poor Ayado ended up…the show has cut her out of the circle of friends! T_T
Someone who vanished seven years earlier, on the other hand, makes a semi-triumphant return to Japan, alive and well, which is wonderful to see. Unfortunately, in exchange for her life, she’s seemingly lost all of her memories, and can’t recall anything about the family home, neighborhood, or school.
Her brother chooses this place to profess his love for, and to promise he’ll be by her side no matter where she chooses to live out her re-charged life. Not picking up on anything worth staying for, Iroha says she’s fine returning to L.A. which for seven years has been far more of a home to her.
So, is that it? Are Hikari and Iroha going in different directions, never to cross paths again? Or will a chance encounter with him be the one thing that can rouse her memories, kinda like Your Name.?