@MasterPannya
To be fair, I just recently heard in the news about a group of people getting lost in the mountain area in my country, unprepared (not appropiate equipment, not water), for some reason. Not one or two people.
11. They were found, luckily, and they were a group of people... but, you know... *shrugs*.
I mean, at least the father could have told anyone and couldn't have left that as a "secret" because he wanted to give a surprise to his wife. Just saying "I'm going for a hike" could have saved the whole "missing" drama.
I do feel the ending a bit rushed (like, we didn't have more closure about how Ootaki's friends feel about his 80s hobby), and the father bit came out "eh" as a final discovery for the ending, but, knowing that Akiko didn't seem that fully concerned about her husband's own thoughts before he went missing... "eh".
Regardless, the finale was quite enjoyable. The last illustration was quite cute, too.