[Time Travel + Class D + Intelligence System] Akira Shimizu accidentally travels to the world of "The Classroom of the Elite" and becomes an ordinary student in Class D. [Ding! Daily Intelligence Updated] 1: Masumi Kamuro from Class A will attempt to steal beer from a convenience store today. 2: Karuizawa Megumi is looking for a "fake boyfriend" to protect her. 3: To satisfy your sexual needs, knock on Hoshinomiya Chie's door three times at exactly 2:00 AM. 4: Tonight at 10:00 PM, Kushida Kikyo will visit your dorm, ostensibly to "ask a question," but in reality... "Is this information...authentic?" Leveraging his foresight, Akira Shimizu navigates the various factions, delivering crucial clues to Horikita Suzune when she needs them most. Become the perfect candidate for Karuizawa Megumi's "fake romance," and enjoy a battle of wits with Arisu Sakayanagi. "Why is their intelligence becoming increasingly unsettling?"

Shun Aragaki travels through time and space to a highly cultivated class, entering Class B, first grade.

He also awakens the ability to manipulate energy, gaining it by increasing his influence and using it to strengthen himself. Immune to all poisons, immune to all diseases, forewarning of danger, turning misfortune into good fortune... First, maximize your life-saving abilities, then truly master your strength!

"Sakayanagi, did you know that chess is actually a sport?"

"Ryuuen, if you want force, I'll give it to you. Let's go!"

"Ayanokouji, these schemes won't let you go. How about a deal?"

"Ichinose, Class A isn't important; having the strength to deserve it is!"

--Two completed books totaling four million words

Traveling back in time, Saigyouji Hanyu finds himself in the Heian Period, a thousand years ago. The dog demons of the west are just beginning to rise, the raccoon cats of Shikoku are emerging, the flower demons of Izumo dominate the Tono region, and the Onmyoji of Heian-kyō aspire to overthrow both the Yin and Yang worlds... His father is the sorcerer who sealed the Saigyou demons, his sister is Saigyouji Yuyuko, he has a mentor, Kamo Tadayuki, and his senior is the Onmyoji Abe Haruaki. To seal the Saigyou demons, Saigyouji Hanyu, who originally wanted a simple life, embarks on the journey to become an Onmyoji, but his life gradually begins to fall apart... This is the story of an Onmyoji, his encounter with Gensokyo, and a young girl.