Wow. This is a difficult question! They both are waaay cool. Inuyasha with his Tetsusaiga, and Sesshomaru with his Tenseiga.
I would have to say Sesshomaru is cooler. After a loong, hard debate :P Because he keeps a stern face even in the most difficult situation. Like Bokusenou says in episode 51
inuyasha is way cooler than sussoumeru is because inuyasha has feelings and sussoumeru does not, and that inuyasha loves kagome but sussoumeru loves no one but himself.
posted 1 month ago
Have you even READ the Manga! It pretty much spells out exactly how he feels!!! I think it's vice versa!