@twinklecake Like Whimsicat said, it's shortened.
The kanji 兄 means (older) brother. Read as Ani, if you add お it's onii, and then you add the honorifics, all of that in hiragana.
The kanji 義 means whatever, I don't know. It's read as Gi in this case, and when you add it to the kanji above, it...
@ReaperCreeper probably not. I think it's mostly a smell thing. There's some studies on it (I read a little a long time ago, since I lived in a city with mosquitoes and used to get bitten like crazy)
I thought right away they sounded similar, but had to actually think about it to realize it was both names mixed up. Btw, in japanese there's no written m, but you pronounce it depending on the next syllable, so a better translation would probably be Dumbalf (yeah sounda dumb).
@Cyreader not sure her parents relationship can be called anything. It for sure isn't close to dating. Where have you heard of the bf running away upon seeing her gf
Not saying this isn't a trashy edgy-wannabe isekai (that I'm gonna read anyways because I have no self control and like assassins, which don't appear that much in isekai genre),
but that isn't really a katana, even if they called it that.
Kogarasu Maru or Kagarasu zukiri is the name of a type of...