Mahiro and Yoshino take the news that Aika killed herself calmly. Her decision was logical, and they have no right to question it.
But as Hanemura points out, this is ridiculous. They should be pissed. To do otherwise is inhuman.
This story reminds me a lot of the story of Sisyphus and his wife (as retold by Camus):
It is said that Sisyphus, being near to death, rashly wanted to test his wife’s love. He ordered her to cast his unburied body into the middle of the public square. Sisyphus woke up in the underworld. And there, annoyed by an obedience so contrary to human love, he obtained from Pluto permission to return to earth in order to chastise his wife.
Annoyed by an obedience so contrary to human love. That describes Yoshino and Mahiro perfectly. I can imagine Aika stewing in the underworld, just like Sisyphus.
So the first half of the episode was great, but the second half was back to more plotting which was fairly dull as usual. The only highlight was Aika showing up again. I especially liked how Yoshino was introduced. “Someone convenient.” An excellent summary.