Starting a Harem in a Crossover World with The Asterisk War

I'm Lott Roca. I transmigrated to the world of Falling Down and became a knight, setting out on the grand road to building a harem.

The next worlds are The Irregular at Magic High School, Absolute Duo, the world of Is It Wrong to Try to Pick Up Girls in a Dungeon?, The Asterisk War, Twin Star Exorcists, Bladedance of Elementalers, Demon Slayer, Naruto, Fate, Re:Zero, Mushoku Tensei, Akame ga Kill!, One-Punch Man, Black Beast, Oni Chichi, and Queen's Blade.