* FoeYay: Suzu and Tetsunosuke. Come on, Suzu even pretty much comes out and says, after another character asks him why he hates and obsesses over Tetsunosuke so much, that "this isn't hate - this is love."
* HilariousInHindsight: Tetsu wanted to become a watcher like Susumu, a oniwabanshu or shinobi/{{Ninja}}). Guess what he is [[SoulEater five to six years later]].
* {{Moe}}
** Tetsu really is an adorable little thing.
** Also, the ever-smiling, childlike Okita Souji ([[BadAss at least until the swords come out]]).
** Kogoro Katsura, a politician working against the Shogunate, is depicted in the manga as a small man with large eyes who tends to cry a lot. Ryoma even puts a pair of little dog-ears on him to complete the Moe-factor.
** And [[CuteMute Saya]].
* TheScrappy: Hotaru for being a wimpy [[TheChick girl who has a crush on Okita]] as well as being very clumsy. Tetsu and Tatsu for being attention-hogging protagonists despite being cowardly, impulsive and down right argumentative/ disrespectful to everyone including themselves.
* {{Wangst}}
** The whole series is pretty much compromised of a bunch of pretty samurai crying and confessing to each other their deepest and innermost feelings of sadness. Oh, and killing people.
** Well, except that the terrorists they're fighting kill their friends and family, are trying to destroy their capital, and yet ''[[NotSoDifferent actually believe in the same ideals as them]]''. And that Okita's dying of tuberculosis. And that Kondo, Hijikata, Yamanami, and Okita had to assassinate Serizawa because he [[DirtyCop used his power for racketeering]] just a ''year'' before the series begins. And the fact that, for them, the penalty for ''any'' violation of the Shinsengumi rules ''or'' Bushido in general, was ''[[DisproportionateRetribution ritual suicide]]''. So, no, that they manage to be as cheerful as they are is actually quite impressive.
* WhatDoYouMeanItsNotSymbolic: The "symbolism" of the cats and bells in the anime adaptation. It was never explained. (Though it was explained in the manga.)
** The character for ''suzu'' means bell, and can also be read as "rin".
* TheWoobie: Tetsunosuke, Suzu, and Okita.
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