been thinking a lot about the mutual protection of tsukasen's relationship. the "this time i mean it, you'll never be in danger again" and "even while i'm away, tsukasa will be safe" of it all. the fact that tsukasa stood up with a punctured lung and fought hyoga for senku—that senku saved the petrification device for tsukasa when he, himself, had been injured by ibara. the way that tsukasa leads the battle group to ensure senku's kingdom of science remains unblighted, and how senku's ambitions, in return, promise tsukasa the future he's always dreamed of ... ! because for as much as the story likes to hammer in tsukasa's devotion to senku, senku's to tsukasa's is there, too. it goes both ways, and that's so important to me