During the fight, Mea realizes that Nemesis is reminding her that she is a weapon. Risa and Mio help Lala by giving her a book on seduction techniques. Lala's warm up stretches shock Rito as he feels her entire body with his own. Lala defeats the attackers using one of her inventions. Yui and the discipline committee implement a demerit policy to ensure the morality of the school. Tearju understands Yami's motives about staying away from her and wishes to see her and Mikan, Yami's friend. Although Rito ends up making a poor quality omelette, Mikan enjoys it because it has Rito's feelings all over it.
By molesting Darkness on his own will, Darkness will mentally break down, crashing the transformation. Lala gives it to Honekawa because he has terrible back pain. She shows Nana the benefits with her Psycho Dive but Nana stops it and questions her use of it at school. Nemesis materialized to ease everyone's suspicions about her. Nana also comments about making a new friend to Lala. As Rito cannot get his hands off, he goes through a whole day of incidents, including a beating from Nana.
Rito suspects that it was Momo's plan to get Mikan to take a bath with him. Darkness becomes confused and goes berserk causing her transformation to wear off. She pulls her true target, Rito, out of class and plunges him into the swimming pool. The Psycho Dive ability showed Rito Mea's fears and loneliness of being a weapon. Rito then appears with a spare umbrella for her, though they end up arguing again.
Run finds out in the manual that the camera can overheat and explode when the user gets too excited. Rito sacrifices himself to rescue Lala and Haruna. In the afternoon, Haruna, fresh from tennis practice, finds Nana at school for her remedial classes. Later, Lala and the others visit Yui to cheer her up. During bedtime, Rito finds Momo in his bed.
She makes an invention that will make her boobs the perfect size, but Rito flies out from a school window and crashes into the invention, turning him into a girl. Zastin comes to Rito's house to tell him that Lala's father is coming to see him to make sure he is worthy of marrying Lala. She goes shopping and almost passes out on the way home due to the intense sun. His confession is instead accidentally directed to Nana, Yui, Mikado-sensei, and Run, inspiring Lala to happily suggest that Rito should marry all the girls and then they can all stay together. During bedtime, Yami and Rito must sleep together.
At the bridge on the way home, Mikan sees Momo who offers to take her home for the rest of the way. The club attacks Rito for kidnapping Momo, but Momo becomes very angry and forces the club to apologize to Rito. At arrival, Rito finds one of his items running, angering Yui. As Rito later takes a drink, Yami asks Rito for a talk. After a big dinner Rito decides to take a bath. Haruna asks Rito about his feelings for the harem plan but Haruna sobers up.
They eventually come across what is known as the Seven Colored Hot Springs due to the water appearing as seven different colors. Run becomes jealous when Kyouko, the heroine, receives all the praise while she receives all the criticism. Mea takes interest in cutting vegetables and volunteers. Meanwhile, Momo and Rito ask Tearju about Mea and master. Momo also blames herself for not intervening given that she was already suspicious of Mea. During the dinner service, Rito freaks out over Yami's Taiyaki soup and thinks she may have set a trap. The next day, Rito accidentally knocks Peke off of Lala causing her clothes to disappear.
Lala then tells Haruna she needs to leave the spring to try to find a hot spring she can bring back to Rito's house. Darkness then recalls how she first awakened when she lost Tearju. As Rito arrives at school, he meets Haruna. Momo, attempting to advance her harem plan, asks Rito to escort Haruna home. Mea approached Oshizu and tells her that she could have died if she stayed in there longer. During bedtime, Lala tells Rito she enjoyed being with Rito for a whole day.