(Harem, everyone gets together, comedy, steamy scenes)
Hikigaya Hachiman, the Equilibrium Aeon: evenly matched against any foe, and able to create EXP books.
He recruits Emanators (the whole Yukinoshita family, the dango mother and daughter, Kaguya's master-and-servant duo, Kasumigaoka, Kato Megumi, and more...).
After dealing with the crisis in the main world (probably around 60 chapters...), he heads to the Honkai: Star Rail world.
Along the way, he discovers that this world is full of transmigrators. Killing every last one of them becomes Hikigaya Hachiman's main mission in maintaining the world's balance.
I'll write over a million characters, just to get some practice...
