>>176620217>since は is used instead of わ as a topic particle, what is わ used for? I dont think i've seen it anywhere so farわ is just a character, not a particle. A simple word that uses it is 川 (river) which is spelt in hiragana as かわ.
Another place the character わ is used is in the negative conjugations of verbs ending with う. If you've ever seen a japanese verb, you'll notice that they are typically a kanji with a hiragana ending, such as 買う (かう / to buy). The reason verbs end in hiragana is so the verb can be conjugated easily. In the negative form of 買う, the う is replaced with わない, making it 買わない (かわない / to not buy). This process works if you want to convert any verb ending in う into the negative.
Oh, you can also theoretically put わ onto the end of your sentence if you want to sound like a girl I guess. Not really sure what it means or how common it's use is, but it sounds cute.