If you're looking for manga similar to The Circumstances Leading to a Certain Magical Heavy Zashiki Warashi's Simple Killer Princess's Marriage (Light Novel), you might like these titles.
Based on the Toei anime version of the 70's, crossover with Devilman, Mazinger Z, Great Mazinger, Grendizer, Cutie Honey
Alternate world where they fight for resources for two different group of humans.
The world consists of a mix of science and magic. Here, you'll find the most prominent college town on the science side, which teaches ESP as a curriculum. In this town, of which 80% of the population is said to consist of students, the season where residents are both cheerful and restless has come... It's Christmas Eve! And amongst the cheerful hustle and bustle of the town, even Touma Kamijou - an average slacker - doesn't plan on missing this event! He had long been grueling away at his supplementary lessons, after all... But in the midst of this unusually cheerful scene, Sister Index - a silver-haired freeloader who's staying at his dorm - glances over at this guy who's predisposed to misfortune, and a new gluttony skill activates?! Under the condition of desperately trying to stop it, even Mikoto Misaka - who had been taken in by the Christmas Eve atmosphere - appears... Thus the curtain rises on the busy "Genesis Testament"!
A special crossover book released to commemorate the 30th anniversary of Fantasia Bunko and Dragon Magazine. It was released as the bonus book for Dragon Magazine May 2018 issue as compilation volume of total 64 pages.
While relaxing on Gourmet Island, Toriko and Komatsu happen upon a dung-shaped Devil fruit, and ponder what it could taste like. Overhearing their conversation, Monkey D. Luffy informs them that the Devil’s fruit tastes horrifically awful, but Komatsu is sure that with the correct preparation, it will be truly delicious. So, while Komatsu begins to prepare a feast, Luffy and Toriko begin to gather ingredients, and decide to challenge each other to a contest to see which one of them can find the most food.