第24話: スメラギ廟でアリスを救うため、カレンは過去の自分と対峙する
The platoons confront Karen at the Sumeragi Mausoleum and Karen reveals that he attempted to travel 2000 years in the past to absorb the power of Yakumo Sumeragi, a fellow Red Strings user, believing he could use that power to save Alice. Unfortunately, every time he tried to save Alice, he failed, and so he transferred his memories to an alternate version of himself so that version could save Alice in his place. Karen has repeated this process countless times and has become convinced that Alice's fate can be changed. Suddenly, the Karen from the present, the one who copied Yuito and Kasane's powers teleports in front of his past self and demands that the past Karen gives his powers to him. Past Karen attempts to convince his present self that there is no way to save Alice, but present Karen forcibly absorbs his powers and, in the process, acquires a connection to Arahabaki. However, this forces him to experience the memory of every single person connected to Arahabaki, including his own past iterations. Yuito and Kasane force Karen to experience Alice's fondest memory: her desire to become strong for his sake. Unfortunately, this fails to convince Karen to stand down, to the point that he is willing to let the Kunad Gate destroy the world if it means saving Alice. Convinced that his brother will no longer listen to reason, Luka asks his friends to stop Karen and the platoons combine their powers to stand a chance against him. (Source: Wikipedia)