Guuzen ga Nokosu Mono - Kioku Senmei II

A collection of short stories, two of which are Please Save My Earth (PSME) related, but they are standalones and spoiler free:

1. PSME - Guuzen ga Nokosumono (Things Accidentally Left Behind)
   
2. Kioku Senmei II
   
3. PSME - BIRTH
   
4. Cibi-01 no YaYaYa!