Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: You have to provide your friends with their own sauna (そな) because they don't want to use your shower. This requires you to go out and buy a sauna for your house (very expensive) just so you can provide your needy friends with what they want (a sauna). Feel angry you have to provide this.
Brace yourself and prepare for your opponent’s attack!