Big Brother Is a Magical Girl, Little Sister Is a Rampaging Beast

When you’re loneliest and most hopeless, a door will open beside you. After transmigrating to a world overrun by disaster beasts and monsters, Lin Lu waits eighteen years. At the very moment when everything goes wrong, the door opens: he can transform into a magical girl! From then on, Lin Lu takes on an “alt account,” the magical girl Lin Ying, and becomes a killing machine for disaster beasts and monsters: “Once a monster, always a monster. Kill!” “Pathetic disaster beast, I can’t be bothered to reason with you. You’re not worth listening to. Die!” Lin Lu slaughters monsters and levels up all the way until... he discovers that all three of his younger sisters are world-ending berserk monsters! Bro, even if you give it everything you’ve got, you still can’t beat your berserk monster sisters?! Oldest sister Lin Weiyi (tsundere): “Who would’ve thought my pathetic big brother was a magical girl?! A weakling like him will surely get slaughtered by some little monster. I’ll show him some mercy and help him out.” Second sister Lin Yayi (scheming): “Starting a villain alliance to oppose Big Brother would be so much fun!” Youngest sister Lin Mengyi (airheaded): “Weiyi, Yayi, I lost Big Brother’s transformation device. What should I do? Help, I’m waiting for answers online...” Sis, even if you give it everything you’ve got, are you really going to toy with your magical-girl big brother?!