The story of "the hill and the sunflowers".
Jabberwocky II is the seventh and final chapter of Subarashiki Hibi. We're put back into Mamiya/Yuuki Tomosane's perspective for the climax of the story. The events of years past finally come into light. The story reaches its climax as Tomosane fights for his wonderful everyday.
The tale of a distant world. It tells the story of the road to the Hill of Sunflowers and the scenery beyond it.
Jabberwocky II leads to three endings, determined by your choice in Jabberwocky I. Hill of Sunflowers, Wonderful Everyday, and the secret ending End Sky II.