I'm a day late, so what.

empatheias might be worth a look for Rider? The pace it medium at the best of times, backtags are plentiful, slice of life is abundant.... but not the only thing we have. Power nerfs are for only the most egregious of things, and... well, Saber is here. You know, Riders bestest friend in the whole wide world.

As for the game setting itself, it takes place on a floating island above what can best be described as the apocalypse. This land thrives on emotions, where it can actually affect the world around you, from small to large ways. Happy? Flowers may bloom. Sad? You now have a cartoony depression rain cloud above you.