At Takaki's suggestion, the main cast travels to Rokushiki Island in search of a means to restore Shiro's godly powers.
Festive August contains the following examples:
- Babies Ever After: Due to Masaki performing the Rokushiki ritual together with Shiro and Yuki, the story ends with both of them pregnant via divine power.
- Battle Couple: Masaki providing supporting fire from one of Mayoi's guns while Yuki battles Magari places them in this territory.
- Bait-and-Switch: Mashiro to the boys when she gets them to think that she wants to peep on the girls too, only to knock them out cold and deliver them to the girls for punishment.
- Beach Episode: August takes place on Rokushiki Island and the group indeed relaxes at the beach.
- Call-Back: Shiro seeing suction cups attached to a Kagami crystal recalls bad memories of Mayoi's choice of equipment for experiments during July.
- Cerebus Syndrome: Aside from the dark turn within this chapter that gets resolved internally, this chapter itself is the last that has a happy ending until the series finale.
- Chekhov's Lecture: The discussions on boundaries and what limits a god's power from January come back into play here.
- Chekhov's Skill:
- Nanaki's Healing Hands are introduced early on, then utilized heavily later to save her mother's life.
- Nuki's ability to spike volleyballs with deadly accuracy comes in very handy too.
- Clap Your Hands If You Believe: The Ichimonji fighting style is based entirely on willpower, allowing Naomi and Magari to perform completely inhuman feats.
- Curb-Stomp Battle: Mashiro vs. Naomi. Followed by Magari against Mashiro later on.
- Epic Fail: Masaki, Kouhei, and Kiyoharu are caught and punished for peeping into the bath before they can actually even take a look.
- Fanservice: The CG images of the girls in their swimsuits, especially Nanaki and Yuki in Brazilian bikinis.
- Formula-Breaking Episode: The only chapter to take place away from Tagami and introduce a large set of one-shot characters, along with the battle between two gods and their armies.
- Intimate Lotion Application: During the trip to Rokushiki Island in August, Moyori asks Kouhei to rub suntan lotion on her back, and when he finishes that, she turns on her back and provocatively asks him to rub her front as well and the scene Fades to Black with a message saying "The following has been censored for your protection" heavily implying a Sexy Discretion Shot.
- Mundane Utility: The first thing the group has Shiro do after regaining her powers and godly strength is to fix a heavy door.
- My Friends... and Zoidberg: Mami gets this treatment when Masaki chooses the offensive and defensive teams, leaving her to patrol the shrine (and act as medic).
- Night of the Living Mooks: All of the girls affected by Rokushiki's power are basically turned into living zombies.
- O.O.C. Is Serious Business: The fact that Yuki sends a one-word text to Masaki rather than an email that's more like a formal letter has him worried.
- Power Limiter: A Kagami crystal is used to prevent a god's power channeled into a human from going out of control.
- School Swimsuit: Out of the girls shown in the CGs, Nono is wearing a white one.
- Screw This, I'm Outta Here: Masaki nearly packs up and leaves after getting teased a bit too much during a tense situation.
- Shout-Out: Masaki makes a direct reference to The Divine Comedy during his internal thoughts.
- That Came Out Wrong: Shiro declaring, "I'm gonna be fixed soon!"
- Theme Naming: The six major families of Rokushiki Island contain the Japanese numbers 1-6 within their names.
- Wham Line: "When we received power in the ritual, we received a child too."
- What the Hell, Hero?: Both Sakura and Moyori to Kouhei as his indecisiveness in continuing to be a super nice guy to all three of his potential girlfriends without choosing one is hurting them as much as it is him.
- You Monster!: Shouted directly at Yuki by Magari.
- Zombie Apocalypse: An apt description of the battle that takes place on the island.
