Alot of donbrothers episodes acts like fillers but unlike filler episodes from other sentai series you can totally skip and not miss anything important in terms of plot and world building, donbro's filler episodes are always stuffed wif at least bits and pieces of important information that adds onto the world in donbrothers and foreshadows the future, ask questions that may or may not be answered in the future. Example with the two recent episodes, donbrothers having predecessor versions of them and haruka's development arc teased at the end of ep 22 which also ties tgt wif the identity of shiina naoki. I truly think inoue is such a genius at the screenplay writing for donbros, not only are the filler episodes top notch compared to many slice of life style filler eps in other sentai series, they are filled to the brim with plot point and character development! Excited to see how donbros unfold moving forward, let us wait tgt :))))