Clannad: Mou Hitotsu no Sekai, Tomoyo-hen is set in an alternate reality where Tomoya Okazaki dates his junior, Tomoyo Sakagami. Tomoyo has been elected to be the school's next Student Council President. This is great news as she can now work toward her goal of preventing the school's cherry blossom trees from being axed. Although Tomoya is ecstatic for her, given his reputation as a delinquent in school, his relationship with Tomoyo is making them the subject of gossip around the campus, which can potentially compromise her standing as Student Council President. The school community's disapproval of their relationship becomes more apparent when the Student Council's Vice-President and even the school's administration warn Tomoya to distance himself from Tomoyo. With the bad atmosphere widening the rift between Tomoya and Tomoyo, will Tomoya succumb to societal pressure and do as they say, or will their love for each other rise above it all? [Written by MAL Rewrite]

Included in the 8th and final DVD of Clannad ~After Story~ is an extra episode set in an alternate universe. Here, Fujibayashi Kyou is the main heroine in place of Furukawa Nagisa. Love can be wonderfully exciting, but also extremely painful. Fujibayashi Ryou, Kyou's sister, is in love with Okazaki Tomoya, the male protagonist. With the help of Kyou, Ryou manages to sum up the courage to ask him out and now Tomoya and Ryou are a couple. However, as things progress, Kyou begins to acknowledge her feelings for Tomoya, and a love-triangle is formed. As everything is revealed, the sisters learn the pains of love and try to decide between the two loves of their life: Tomoya, or each other. [Written by MAL Rewrite]

Hida Kizuna possesses the HHG (Heart Hybrid Gear) ability, but it is not strong enough to make him particularly important. His older sister calls him to transfer to a strategic defense school, where many of the students (many of which are large-breasted girls) use their HHG abilities to fight invaders from another world while wearing extremely skimpy pilot outfits. Kizuna's fighting ability doesn't measure up, but his sister has another plan—apparently having erotic experiences with Kizuna will allow the girls to replenish their energy or power-up. It looks like his new school life is going to be full of embarrassment. (Source: MangaHelpers)

When Nasa is called in to work suddenly, Tsukasa faces her first night alone since they married. Struck with loneliness, she takes ahold of the smartphone that Nasa gave her as a gift. Even when apart, they remain connected at the heart.