Asta and Yuno have increasingly like a companionship type Rivalry as I would like to think. Asta and Yuno's Rivalry like Naruto and Sasuke were begun as far back as they were entirely youthful. Yuno has a great deal of Mana. Not at all like Yuno, Asta has no mana at all. Yuno wound up getting the fourleaf clover Grimoire which is crazy for the general visibility's. Asta got fiveleaf clover Girmoire which just a few thinks about it. All through the anime I've seen that when Asta gets a buff or gets more grounded Yuno get more grounded also. That is one of the key parts of a decent Rivalry as I would like to think.