Naruto Shippūden: Season 20, Episode 500

20 - 500: Hidden Leaf Story, The Perfect Day for a Wedding, Part 7: The Message

Naruto had once lived a lonely existence, ostracized by everyone. But Iruka's words and his very presence have supported Naruto to this day. As Naruto's wedding nears, Iruka begins to lose sight of what he was to Naruto, and is unsure of what to say for his message.