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1. Someone who becomes a reclusive, emo angstbucket with the belief that every human being is terrible following a past relationship trauma; especially a death. All friendships and other relationships thenceforth are extremely strained and unstable, causing most people to wonder why the heck they even hang out with them in the first place.

2. Someone who is unable to forgive someone and/or others due to multiple instances of deceit and broken trust in a relationship, however continues to trust said person/people regardless.

Derived from the main character of the video game The World Ends With You, Neku Sakuraba.
"It’s like he has a Neku Complex or something."
by 【デル】 Del. May 09, 2014
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