It's the season for student teachers at Mai High. Keima's class gets Miss Nagase, a cheerful pro wrestling fan who has great hopes and dreams about becoming a teacher. However, her attention is immediately drawn to a problem child who plays games during class (...Keima, of course). The other teachers have already given up on Keima's attitude, but Jun is inspired to save him...

Keima and Elsie head to a game store in a neighboring town to buy a certain game. However, there is a very enticing fair at a different store... Keima dispatches Elsie to obtain the game in his stead. Will she succeed... ("Her First Errand") Haqua shows up because she needs to write a report about the loose soul which was secured a while back. It appears that she wants help writing the report... ("Tea for Three.")

An extremely fired-up Keima and somewhat apathetic Chihiro have spent many days going through possible situations and conversations to prepare for the conquest of Yuta. Everything is going smoothly as the day of the confession finally arrives——However, Chihiro says something which leaves Keima dumbfounded...Will this be the first failure for the God of Conquest?

Keima was under the impression that he had found a potential route where he would cheer up the broken-hearted Chihiro, but she's already found a new love!? Keima snaps at the absurdness of the real world, but he is beaten down by Chihiro's counterattack. That is when Keima is helped by a previous conquest, Ayumi! Ayumi manipulates Keima and Chihiro into cleaning the classroom by themselves. Eventually, Keima finds himself caught up in a certain event...

One gloomy Monday morning, Keima's sour mood is exacerbated by harsh words from Chihiro. Keima doesn't give a damn about the real world, but her words still leave him a little depressed. However, he brushes them off as the ramblings of a background character...but then they discover that she's been possessed by a loose soul! And Chihiro's parameters are the worst Keima's seen so far... Keima is beaten down by the ordinary girl who exemplifies the real girl. That is when a certain someone appears before him—!?

Keima and the demon girls find the fugitive loose soul in one of the older school buildings. However, the matured loose soul is far more powerful than any of the previous loose souls!! Haqua and Elsie work together to capture the loose soul, but it escapes after taking control of students and using them as a distraction. Haqua yells at Elsie for her mistake and runs after the loose soul by herself...

There are two of Kusunoki!? In order to succeed the Kasuga School of Martial Arts, Kusunoki had forsaken her weak "feminine" side. However, when she engages in weak activity, her lingering "girly side" appears... Kusunoki agrees to go on a date with Keima to draw out the "feminine Kusunoki" and conquer her weakness. Elsie watches nervously as Keima and Kusunoki go on their date. How will their date go...

One day at school, Keima becomes the target of a group of delinquents, which is when an imposing girl by the name of Kusunoki Kasuga appears. She dispatches of the delinquents and saves Keima, but she appears to be disgusted by the "weak" Keima and his inability to fight back... After a harsh lecture from Kusunoki, Keima wants nothing to do with her, but once the loose soul sensor goes off, he can no longer ignore her. He attempts to approach Kusunoki by joining the girls' karate club where she is captain...

Due to spending all of his time chasing after loose souls, Keima's room is filled with dating sims that haven't been completed... "Conquest mode" is activated to clear off the backlog of games! Keima is truly a god as he conquers game after game!! ...After a few hours, Keima is still gaming away after ignoring warnings from a concerned Elsie when his body finally gives out and he falls unconscious...as the end draws near, he is greeted by an unexpected sight...!?

The library has decided to dispose of a number of books to prepare for the new media room. Shiori can't bear the thought of her precious books being thrown away, so she sets up a barricade and holes herself up in the library. The members of the library committee pay no heed to Shiori's silent protests and prepare to storm the library and dispose of the books as planned. Shiori begins to falter in the face of adversity, when Keima suddenly appears before her. Has he come to save her, or perhaps...

Keima proclaims that books are no longer necessary in this day and age and the soft-spoken Shiori finally loses her cool!? As a result, Keima is able to hear how Shiori truly feels, but now there's an uproar in the library...? The "fortress of paper" that's protected Shiori from the real world is about to change...

Elsie's cake ended up blowing up! Keima yells at Elsie for lacking common sense, so Elsie goes to the library to study up on common sense in the human world. Maijima Academy's library houses an expansive collection of books. Elsie gets excited after finding a flashy picture book, but then she detects a loose soul in the librarian, Shiori Shiomiya! Shiori is a quiet and soft-spoken girl. It will be difficult to get her to speak, much less open up...

Elsie tries to cook for her divine brother, but Keima is never pleased. This time, she tries to make a "self-propelled" lunch, but she gets yelled at again... Elsie is feeling down, but after some advice from Chihiro, she decides to try again! As she prepares to make a strawberry shortcake, she prepares sugar from hell and eggs of all kinds of colors. One of the eggs is...

Kanon appeared to have cheered up, thanks to Keima's support, but then she disappeared right before the concert! The staff members are all flustered as Keima and Elsie desperately search for Kanon, but the pumped up audience doesn't realize that Kanon is missing. Meanwhile, a transparent Kanon is sitting by herself in a corner of the hall, unable to bear the pressure. What will happen to the concert...? Will Keima make it in time?!

...I'm going to turn you into a fan! And so, Kanon sings on the roof for Keima. Keima treats her coldly in an attempt to learn what is troubling her, but Kanon is so hurt that she goes into a state of shock and her body becomes transparent! It appears to be related to the loose soul inside her...but as Elsie looks for information about Kanon, she learns about something that happened in Kanon's past. In the meantime, Kanon's dream concert at Narusawa Seaside Hall is drawing near.