The End Is a Picnic With My Brother

At the moment the world is said to be destroyed, Elm tells his brother Ash of his hidden feelings.
But for some reason the usual morning has come―
Even after the confession, Elm thinks that his older brother, who is no different from usual, may not have heard him, but Ash avoids him when Elm tries to touch him...
Then Elm can't help but to run away and falls into an icy lake, but what saves him is a big, beautiful polar bear!?

Original Japanese