Trinity Seven - ep05

Most of this episode is establishing Yui's character, first with her sharing a bed with Arata. Then further with her clinging onto Arata for most of the episode. Then you have her making a compromise with Arin, with her declaration that she has no intention to take Arin's position as the wife away that she is fine with being the mistress. Then with these two clinging to Arata it cause all sorts of problems that cause Mira to show up with Akio by her side complaining about Arata impure actions. This cause Selina to misunderstand the situation, and claim that they are going to begin fighting over Arata. Which gets Lilith involved with them loafing around, by this time the damage has already been done and Levi join the fight just to have an excuse to fight Akio. Which then has Arin to join in, and lastly you have Yui that join the fight as well as ending it by putting everyone asleep.

Then with the conclusion of the fight things began to move in a new direction with the passing of a day. That leads to an investigation of a new Breakdown Phenomenon which causes Lilith the question the two previous culprits which turns up nothing. However with the mention of a library leads Arata to question Arin about it. That leads to Arata learning about the school's ghost story and it is likely that this breakdown phenomenon is connected which leads them to investigate the situation. Then as it turns out Lilith and Mira are already investigating the library. That things really get started when Selina shows up. That with this they all get teleported to a different location.

That through this action Arata meets the last of the Trinity Seven Liese, who turns out to be Selina's twin sister. That it turns out the twins in the ghost story were Selina and Liese. There is also the fact that Liese disappearance was no accent that it was intentional since she desires to become a demon lord and the library so report to hold the key to become one. It also appears that this is also why she join Grimoire Security so that by fighting Breakdown Phenomenon she could learn about them. The question is why does she need to suck other mages magic. There is also the greater issue toward the end when she manifests the dark wings and they don't hurt her like they do Arata. Now as thing are prepared for the battle to began with this evil mage the question is will they reform her or will she die and Selina might end up taking her sisters place in the Trinity Seven. It is more likely that they will reform her in some way but the question is how.