[Crossover] Minors Save the World

Bound to an Onmyoji System, I have to save the world, but all my units are minors. Every Shikigami appears in a minor form, and at first they only have their toddler forms. As they level up, their adolescent forms (boys? girls?) unlock. But all the Shikigami I summon at the beginning are healers and support, and they can't level up on their own!

#What am I supposed to do? I'm desperate too!#

So I have no choice but to find my bound teammate and have them carry me _(:з"∠)_

Marvel series (Justice League, Avengers, Mutants), Sherlock, Constantine, Supernatural, Criminal Minds, Natsume's Book of Friends, The Morose Mononokean, Hozuki's Coolheadedness, Inuyasha, Touken Ranbu, K, Nasuverse (FZ, FSN, FGO, FA...)... (Order undecided)

At first, each world was separate. But later, when the FGO world came along, in order to keep humanity's order from being burned away so quickly, the worlds began merging with other worlds of their own accord!

#The beginning of the love rivalry#

Let go! That's my kid!!