If you're looking for manga similar to Fate/Grand Order x Himuro no Tenchi: 7-nin no Saikyou Ijin-hen, you might like these titles.
Ai-chan is the AI system for Honkai Impact 3's battleship, [Hyperion]. She's in charge of operational tasks such as training new cadets, commanding the battleship, and analyzing data. She's the "real" main character... ?!?! Here comes the facts that Honkai Cutie Ai-chan would never tell to players!
Dr. Einstein identified a world-ending phenomenon known as the Vodka Girls. Dr. Tesla has been dispatched to end their cataclysmic spree across the multiverse. Will she succeed?
A world where witches and humans coexist. There are five countries on the continent that is the center of the world, and their land patterns and personalities vary from country to country. In this world, a big moon floats in the sky, and people call it the "Great Calamity" that attacks the world by exerting its mighty power. This is the story of the wizards who fight the Great Calamity.
This is a story that takes place in a certain prefecture in the north. In contrast to the few daylight hours it gets, its people are cheerful if a bit eccentric. Among them is Akita, a horned girl. A naturally argumentative and positive child, she lives happily every day. Spicing up her life is Asahi, her slightly odd childhood friend, and Komachi, a city girl who isn't quite used to life in the prefecture yet. There's also Akita's older sister, a member of the Girl Scouts.