Why doesn't Ojisan's death get any attention? Alpha is shown getting emotional over the littlest of things, so it's weird that the passing of one of her best friends wouldn't affect her. A chapter where she reminisces about him would have sufficed, really. The same holds true for Sensei.
Both Ojisan and Sensei each get an Obi-Wan Moment chapter. Chapters 130 and 132 respectively. You can clearly feel they don't expect to live much longer and bid Alpha farewell.
With humanity declining this much, how are they still getting gasoline, electricity and coffee?
Alpha can hear customers coming from hundreds of meters away, yet somehow she never hears the mail being delivered.