Clannad

Tomoya is a bitter, third year high school student. His mother passed away, causing his father to resort to alcohol and gambling. Tomoya is distant with his father and has become a delinquent in the years since his mother's death. Walking to school, he meets Nagisa Furukawa who is a year older but is repeating the grade due to illness. She is alone, as most of her friends have moved on. The two begin hanging out, and as time goes by, Tomoya finds his life shifting in a new direction. (Source: Sentai Filmworks)

Clannad: Another World, Tomoyo Chapter

In an alternate universe to the original Clannad anime, Okazaki Tomoya is dating Sakagami Tomoyo in the 24th and final episode of Clannad. When Tomoyo is elected Student Council President, her dream to save the school's cherry blossom trees from being cut down begins to come to fruition. However, her never-ending duties and bad rumors about their relationship spread by fellow students due to Tomoya's reputation as a delinquent create a rift between the two. As Tomoya watches Tomoyo rise higher and higher into the distance, their relationship is stretched to the limit by a society that threatens to break them apart.

Clannad: Another World, Kyou Chapter

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]

Angel Beats!

Otonashi wakes up in the afterlife to find out he has no memories of his life before death. Desperate to survive in a war that could yield another unfortunate fate, he joins the SSS in the battle against Angel, whose very mission is to destroy all inhabitants of this afterlife. As Otonashi struggles to recover his memory and learn more about this world, he finds that not all is as it had seemed. (Source: Funimation)

Air

Yukito Kunisaki is on a journey in search of the Winged Maiden who was bound to the sky centuries ago, after hearing an old childhood tale from his mother. As Yukito shows his puppet show to people in an attempt to make some money, he finds himself in a small town in which he did not expect to stay very long. However, when he meets an unusual girl named Misuzu, things take a drastic turn as he is invited to stay with her. By staying in the quaint town, Yukito soon becomes friends with the locals. As he gets to know them better, he learns of their problems and decides to help, putting his search for the Winged Maiden on hold. With his search on hold, and his growing attachment to Misuzu and the small town, will Yukito ever find the Winged Maiden, or is she closer than he thought? [Written by MAL Rewrite] Note: Includes episode 13, Soushuuhen (Summary).</i>

Charlotte

The story centers around the special abilities that occur among a small percentage of boys and girls in puberty. Yuu Otosaka uses his power without others knowing, and lives a fairly normal, average school life. Before him suddenly appears a girl, Nao Tomori. Due to his meeting with her, the fate of special power-users will be exposed. (Source: Anime News Network)