Argento Soma Special  

Argento Soma OVA, Argento Soma Episode 24.5, アルジェントソーマ, Argento Soma: Hitori to Hitori, アルジェントソーマ 孤独[ひとり]と孤独[ひとり]

Sue Harris embarks on a mission in a frozen nation where she experiences an accident while climbing mountains. Her life is at risk due to the harsh environment, but she manages to survive by encountering an alien and engaging in combat with it. The two beings must work together to escape from their dangerous situation alive.