Gokukoku no Brynhildr - MangaDex

Ryouta Murakami is a teen astronomy buff with a photographic memory. He took an interest in astronomy after a friend he had as a kid died during a trip for stargazing. One day, he notices that the transfer student in his class looks oddly familiar. She looks just like his old friend - the one who believed in aliens and kept looking for them in the skies until just before she died.

Gokukoku no Brynhildr BP: Mako Fujisaki

What are some manga worth reading which have not been adapted into anime? - Quora

Read Gokukoku No Brynhildr Chapter 105 - Mangadex

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Gokukoku no Brynhildr - MangaDex

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Gokukoku no Brynhildr OVA (Brynhildr in the Darkness OVA) · AniList

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Anime Seasons, Page 4

ENG] Gokukoku no Brynhildr chap 158

Gokukoku no Brynhildr - MangaDex