
Quick answer — "Memento" by Nonoc is the ending theme of Re:ZERO -Starting Life in Another World- Season 2 Part 2 and 1 other anime.
"Memento" by Nonoc is the ending theme of Re:ZERO -Starting Life in Another World- Season 2 Part 2, Re:ZERO -Starting Life in Another World- Season 2.
"Memento" is performed by Nonoc.