|A Good Relationship Forever|
|Air date||April 6, 2015|
|Written by||Katsumi Hasegawa|
|Directed by||Munenori Nawa|
|Romanji||Itsumade mo Ī Kankei|
|Opening Theme||Our Honey Boy|
|Ending Theme||Starry Sky Story|
Previous Episode → OVA 10
Keita, Ako, and Riko play a game in which they exchange bits of tapioca between their mouthes. After realising that the tapioca juice was actually alcoholic, Ako takes advantage of Keita's drunkness, soon discovering that he possesses memories of the previous times he was intoxicated. Riko attempts to do the same, only to have it backfire on her.
Keita and Yūzuki are at Yūzuki's apartment as the sunset, after both shared a kiss Yūzuki asked Keita to make her into a women. Later both appeared to be in bed as Yūzuki is on top of Keita, as it seem they doing their first time, which Yūzuki gave Keita a headbutt. We then cut to a scene where Keita is still lying down (this time with his boxers on) as he is now with Mikazuki, who is a one piece swimsuit, as she want to do it but Keita say he doesn't want to and Miakzuki think is because her sister enter the room last time and suggest they should have a threesome. We then cut to Keita and Miharu as Keita is shown rubbing her bust up and down, she then pushed him back and crawl over him as she urinate on his face, just then we see that Keita was actually imagining it in his mind while pleasuring himself.