Based on the tweet "@milksol he knows wonwoo can't hold any longer when his fingers trembling uncontrollably :( so sol gives his mask for wonwoo and", categorize the level of fear felt by the author. Select from the following: 0: no fear can be inferred, 1: low amount of fear can be inferred, 2: moderate amount of fear can be inferred, 3: high amount of fear can be inferred.