I suck in Kanji, so whenever I write MASAMUNE I write it in hiragana form and just write, enclosed in parenthesis beside the word, indicating that I mean a "sword", that it's not a surname or a place or whatever else.
But there is a specific kanji for the MASAMUNE, and for the life of me I have no idea what it is.
Writings used in most japanese games are a mix of hiragana, katakana, and kanji
