our MC channels the power of friendship. in this world, there is only 4 elements "fire, water, air and earth", but apparently our protagonist uncovers a new one: the element of friendship. which is actually just bullshit, that gives you unlimited plot armor and make your enemies die falling on a banana. ah, and of course how could we forget about sudden bursts of power after the hero almost got defeated, but suddenly, silhouettes of his friends appear behind him and it gives him more power... what happens if the hero gets almost defeated again even with more power? obviously power of friendship gives him even more strengh. but of course this works only when fighting villains. btw, there is also 40% that the villain will suddenly become "good" after you defeat them, and become your friend, increasing your "power of friendship".