Towa no Yuugure

Akira Himegami once lived on the edge of an AI revolution beside Towasa Oumagi, a brilliant pioneer determined to reshape humanity's future. A violent attack tears that future apart, and when Akira finally opens his eyes again, centuries have passed. The city he knew lies in ruins, and the surviving world is governed by unfamiliar institutions and customs.

Into that strange future walks an android named Yuugure, whose face is almost identical to Towasa's—and whose first request is that Akira marry her. Holding onto the hope that the real Towasa may still exist, Akira travels with Yuugure through a society where marriage, love, and even humanity have changed, searching for the truth behind the lost centuries and the bond forming between them.