Celestial Method

Season 1, Episode 13: From the Starting Sky

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After Shione encourages Nonoka to not give up on Noel, the two of them concoct a plan to bring everyone to the observatory. The others, despite still not remembering Noel, feel there is something important they are forgetting and agree to try and summon the saucer once more. Together, they wish to see Noel again, after which a large field of sunflowers suddenly appears near the observatory, but no Noel. The next day, Nonoka learns from her father that someone was in her house, while the others start to regain their memories of Noel, and together they head towards the sunflower field, where Noel is waiting for them.