I had a lot of problems with H2O: Footprints in the Sand, including the way that the main character, Takuma, got into his rather pathetic state by the end of the series in the first place. However, the show resolves this story arc in a sudden and shocking fashion.
Hayami getting killed by a train was tragic in many respects, including the fact that she had just been accepted by the town and that I don’t recall the story hinting anything like that was going to happen, making the viewer feel like things were becoming alright (except for Takuma’s condition) before it occured, and the fact that Takuma realizes that the same thing happened to his mother. It was a very bright spot in the writing for a series which was otherwise rather lackluster.
However, this event, which is a top contender for “most shocking event of the year” puts it on the list of 12 Moments of Anime, even if it isn’t a particularly happy moment.
The 12 Moments of Anime project is the brainchild of CCY.