Top 1 in Top 11 most attractive Japanese movies of Princess Ayase Haruka.
The Day Of The Real, Perfect Plesiosaur is about Koichi (Sato Takeru) and Atsumi (Haruka Ayase) who are childhood friends and eventually become a couple. About a year ago, Atsumi attempted suicide and then fell into a coma.
Desperate, Koichi wants to know why Atsumi has such intentions so he engages in a new medical therapy that involves the central nervous system. This therapy will help Koichi enter Atsumi's subconscious. When Koichi entered Atsumi's subconscious, Atsumi asked Koichi to find the picture of the "snake head" that she drew in her childhood. This drawing is the key that brings back the repressed childhood memories that bring their souls together