(The protagonist is the God of Killing, Parasite Beast Chapter → Tokyo Ghoul Chapter → Demon Slayer Chapter → Spell Return Chapter → Kamen Rider Chapter → Ultraman Chapter)
This is a story that mixes various worlds together. It is not a journey through various worlds, but a world. As a visitor from another world, he starts his own legend by controlling parasitic beasts and uses human power to fight against all alien races.
The writing is good, but the title is not