私男と俺女 (Watashi Otoko to Ore Onna)

Background
I think it's better to laugh

The story of a girl using the Ore and a boy using the Watashi pronoun. The pair meet when they boy trips in the snow and she offers him her towel. Six months later, the girl starts refering to him as her friend, making him cry of joy. While the girl is a bit annoyed by his girlish behaviour, and he is intimidated by her tough attitude, they still consider the other their best friend.

It was featured on a single of the same name.