Ginga no Shinanai Kodomotachi e

A tale follows two children who are immortal, starting in a time when all things have come to an end. The older sister, π, is cheerful and enjoys rapping, while the younger brother, Makki, is quiet and often seen reading by himself. The collected tankoubon volumes organize arcs from the original web serialization: the first volume includes chapters 1-5 focusing on π, followed by chapters 6-7 labeled Mira 1. The second volume contains chapters 8-13 under Mira 2, and chapters 14 Part 1 and 2 centered on Makki.