I Saved Too Many Girls and Caused the Apocalypse: Volume 16 by Namekojirushi

With the mastermind of the extremist faction finally apprehended and the heroines recovered, Rekka and company are about to learn the true nature of the War of All... and there’s a lot more at stake than anyone bargained for. After everything he’s been through, will Rekka be able to cleverly pool his resources one last time and thwart a real apocalypse? Family secrets, divine meddling, time travel, world jumping, and so much more come together for one wild ride in this chaotic finale!