Kiwaguro no Brynhildr - All The Tropes

For 10 years, Murakami Ryouta has been tormented by the death of his childhood friend Kuroneko, whom he had been really close to. The guilt he feels because of her death had 2 effects on his psyche: motivates him to fulfill a childhood promise he made with her to show aliens do exist (at his 16 years of life, he's already third-ranked in school and is on fast track to become a NASA researcher), and left him with a deep inability to communicate and understand the opposite sex.
For 10 years, Murakami Ryouta has been tormented by the death of his childhood friend Kuroneko, whom he had been really close to. The guilt he feels because of her death had 2 effects on his psyche: motivates him to fulfill a childhood promise he made with her to show aliens do exist (at his 16 years of life, he's already third-ranked in school and is on fast track to become a NASA researcher), and left him with a deep inability to communicate and understand the opposite sex.

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