I, the spiritual mentor of beautiful girls from all over the world

Lin En, seemingly an "ordinary" Chinese language teacher at Sobu High School, has a secret.
——He is the only owner of the [Safe House of All Worlds’ Souls]!
His "classroom" connects the top "problematic beauties" in all the heavens and worlds!
At the beginning, the safe house "picked up" a girl who had just lost her sister and whose heart was filled with hatred.
Facing her murderous intention, Lin En only gave her one homework: "Go back and face your anger!" When Shinobu Kocho brought this "homework" to stir up a bloody storm in the Demon Slayer world, Lin En was using the first reward [Emotion Perception] to accurately hit Yukinoshita Yukino's loneliness!
→ Homura Akemi: From "the desperate girl of reincarnation" to "the demon who controls time and cause and effect", she rewrites fate and subverts the universe!
→ Misaka Mikoto: From "The Electric Princess Carrying Original Sin" to "The Thunder Queen Towards 'Absolute Power'", she pierces the realm of God with thunder and reshapes the order of Academy City!
Of course, occasionally I'll also mess around with some everyday pretty girls...
This world is truly wonderful, but sometimes it feels overwhelming...