Want you to let me explain with 〜させてほしい

Grammar Explanation: Want you do to something with 〜てほしい

Takeo tries helping the girl who likes his friend Sunakawa. When Takeo receives a call from his own girlfriend, he realizes he’s alone with another girl.

たけお:: 「すまん大和(やまと)に事情(じじょう)説明(せつめい)させてほしい」; "Sorry, I'd like you to let me explain the situation to Yamato."; 「ゆきかちゃんが砂川(すな)を好(す)きだってこと大和(やまと)に話(はな)していいか？」; "Is it all right if I tell Yamato you like Suna?"

Note: Takeo calls Sunakawa “Suna”, which is why the furigana on 砂川 is すな.