River (2011)

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Hikari (Misako Renbutsu) lost her boyfriend after a random killing that took place in Akihabara. Afterwards, Hikari feels a great sense of loss and shuts herself off from the world. She doesn't leave her home. Finally, with the help of those around her, Hikari is able to regain stability in her life bit by bit. She then goes to Akihabara and roams around. Meeting people there, who are going through their own difficult situations, Hikari is able to begin moving her life forwards.