Chika Anzai

Seventeen-year-old Mugi Awaya and Hanabi Yasuraoka appear to be the ideal couple. They are both pretty popular, and they seem to suit each other well. However, outsiders don't know of the secret they share. Both Mugi and Hanabi have hopeless crushes on someone else, and they are only dating each other to soothe their loneliness. Mugi is in love with Akane Minagawa, a young teacher who used to be his home tutor. Hanabi is also in love with a teacher, a young man who has been a family friend since she was little. In each other, they find a place where they can grieve for the ones they cannot have, and they share physical intimacy driven by loneliness. Will things stay like this for them forever?

Once upon a time, this world was created and destroyed by a single girl. The ones who saved the girl's heart were Hyper Agent Gridman, who appeared from another dimension, a monster with a heart created by the girl, and high school student Yuta Hibiki. Yuta, who has advanced to the second year of high school, decides to confess to Rikka, who is in a different class. However, their peaceful daily lives are shattered by the sudden appearance of a monster. Gridman reappears in front of Yuta and tells him that the balance of this world is about to collapse. Eventually, the crimson dragon Dynax, Gridman's supporter New Century junior high school student, and Yomogi Asanaka, a resident of another world, appear, and Yuta gets caught up in an extraordinary situation.