Gymnastics & Dream World

 is the eleventh chapter of the Trinity Seven series, released on October 8, 2011 in Monthly Dragon Age November 2011 issue and later compiled in third volume on April 5, 2012.

Summary
Upon awaking, Arata discovers a nude Yui and Arin sleeping in his bed. Lilith suddenly arrives to wake him up and becomes stunned after witnessing the current situation. Nevertheless, Arata decides to return to bed while asking Lilith to join them, much to her chagrin.

Later, during P.E. lessons outside, Arata continues to enjoy several intimate moments with Yui and Arin until they are approached by Mira and Akio. The latter abashedly orders Akio to eliminate Arata before Lilith, Arin and Selina also joins them. Meanwhile, Mira discusses with Yui to warn her that while situation with Yui's Breakdown Phenomenon was resolved, she will still continue to monitor and terminate Yui and Arata as necessary. Regardless, Yui happily understands and agrees. Observing the group, Selina is amazed by the gathering of the Trinity Seven members, declaring that the Trinity Seven are in competition for Arata. Although Lilith scoffs at the idea, Levi and Akio nevertheless decide that this is the perfect opportunity to settle their previous battle. The two transforms into their Magus Modes, causing Arin to join them as well. As Selina excitedly covers their magic, Yui also decides to partake and changes into her Magus Mode. Using her "Arc Symphony" magic, Yui casts a spell to invite Arata and the girls into her dream world.

Arata suddenly finds himself in Yui's room where he is greeted by her in her dream form. The other girls had fallen due to Yui's spell, with the exception of Mira who had deflected her magic. After Mira leaves the room, Yui attempts to kiss Arata, although he prevents her, stating that was only for when they were closer, much to her frustration. Subsequently, they begin to discuss Yui's friendship with Levi, due to their isolating nature of their Thema's. Because she had always been sleeping alone, Yui did not have the need for friends. Nontheless, Arata asks her to become his friend which she happily obliges and celebrates. She then offers him to explore her body as a friend, but is stopped after Lilith scolds him in her sleep. Before he leaves, Yui kisses him on the cheek as gratitude for saving her promises to help him.

Meanwhile, in the real world, Levi, Lilith and Arin watch over a sleeping Arata and Yui in the infirmary. The three discuss that six of the Trinity Seven members has met Arata, however the last one's whereabouts is unknown. A dejected Selina agrees, but hopes that since Arata was able to save Yui, he maybe able to do something as well.

Characters

 * Arata Kasuga
 * Lilith Asami
 * Arin Kannazuki
 * Yui Kurata
 * Mira Yamana
 * Akio Fudo
 * Selina Sherlock
 * Levi Kazama

Trivia

 * In the fifth episode of the anime, Dream World and Sub-Administer, the scene where Yui makes Arata grope one of her breasts was omitted.