Original title
あまんちゅ！約束の夏と新しい思い出のコト
Premiere
Official website
Official twitter
Hashtags
Amanchu! Yakusoku no Natsu to Atarashii Omoide no Koto Amanchu! The Story of the Promised Summer and New Memories
VRV (Film) ※ via Crunchyroll