30 Days of Anime and Manga - Day 15 - Saddest scene.
I know already the answer, because I get sentimental and cry every single time I see just a bit of this scene. It´s also one of my favourite scenes in this series.
It is in Naruto Shippuuden, the scene where Minato and Kushina tell their dying words to infant Naruto. It shows how much they love their son and how much a parent in general can love their child. It really gets me all the time, when I hear poor Kushina´s words. She says small but meaningful things with emotion mixture of love & sadness. You gotta watch the series and the scene to probably then understand what I´m talking about and why it´s so sweet and tragic.