1. Knightmare

One night, an interesting visitor appears in Koyori Aisaki's dreams - her good-looking homeroom and English teacher, Mr. Grimme. This is not the Mr. Grimme that Koyori remembers, though - what's with the knight get-up and harsh verbal tone? On top of that, what is all the nonsense coming out of his mouth about Koyori's dreams being "dangerous?" The fact is, Koyori does indeed have dreams of her own - except she's all but given up on them. What she doesn't yet realize is that giving up on dreams paves the way for darkness to turn those dreams into nightmares! Enter "Knightmare," guardian of dreams, who arrives once more to exterminate nightmares as only he can!

from Renta!

2. Knightmare: Revisited

"“It hurts…” Masaya Katagiri hears these words repeat like a mantra in a daydream he has during a study session with Koyori Aisaki, the object of his affections. Masaya awakes from his reverie to see a concerned Koyori sitting in front of him. Whose voice was that in my dream? he wonders. Upon a quick stop at the school tennis court that was supposed to be a remnant of his past, Masaya gets the answer to his question…

from G2Comix