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 need to acquire an elephant (え) for your elephant collection. If you don't acquire an elephant, you'll look like an idiot in front of your elephant collecting friends.
Although Koichi lost everything, he was able to gain a best friend in Viet.
It's not easy to obtain one's trust.
I got a lot out of my experience teaching English in Japan.