
Hitagi Crab (1)
High school senior Koyomi Araragi discovers a shocking secret one day after helping his classmate Hitagi Senjougahara—a secret he is never to tell.
Episode 1•25m

Hitagi Crab (2)
Koyomi takes Hitagi to consult Meme Oshino, the wandering expert on supernatural oddities. Meme provides advice to them on exorcising apparitions.
Episode 2•25m

Mayoi Snail (1)
Uncomfortable after quarreling with his sister on Mother’s Day, Koyomi leaves the house. Hitagi bumps into him at the park and makes an offer.
Episode 3•25m

Mayoi Snail (2)
Koyomi and Hitagi meet a girl named Mayoi Hachikuji in the park. She seems to be lost and cannot find her way home. The two try to help her.
Episode 4•24m

Mayoi Snail (3)
An apparition is behind why Mayoi is unable to reach her mother’s house. Receiving advice from Meme, Hitagi tells Koyomi the surprising truth.
Episode 5•26m

Suruga Monkey (1)
On his way to Hitagi's house, Koyomi bumps in to Suruga Kanbaru, the school's basketball star and an old friend of Hitagi, of whom he can't get rid of. Later that day, Koyomi is attacked by a mysterious being.
Episode 6•24m

Suruga Monkey (2)
The day after his attack, Koyomi goes to see Suruga, where she tells him something about herself he can't quite grasp.
Episode 7•24m

Suruga Monkey (3)
Koyomi takes Suruga to see Oshino in order to help her. However, the help he offers isn't the help Koyomi wanted...
Episode 8•24m

Nadeko Snake (1)
Tasked by Meme, Koyomi heads to a lonely temple to attach a prayer slip. There he sees a dead snake that has been severed into five parts.
Episode 9•26m

Nadeko Snake (2)
Koyomi taps into Meme’s powers in order to lift the snake’s curse from Nadeko Sengoku, a mysterious girl he encounters at the temple.
Episode 10•24m

Tsubasa Cat (1)
Nadeko comes to thank Koyomi, and the two geek out over a shared interest. Tsubasa Hanekawa passes by and suddenly complains of an acute headache.
Episode 11•24m

Tsubasa Cat (2)
Koyomi is over the moon when Hitagi announces their first date will finally happen. But on the day of, he finds that she is not the only one there.
Episode 12•24m

Tsubasa Cat - Part 3
On the way to school, Koyomi finds Hachikuji in the middle of the street and assaults her in a teasing manner. Hachikuji panics and breaks his finger. Later after they calm down, Hachikuji tells Koyomi that she saw Shinobu at the donut store. Koyomi goes to the school bike rack and gets a text from Tsubasa, asking him to ditch school and come to the playground. He finds her there still in her pajamas and wearing a hat. They begin talking about her recent headaches and Koyomi persuades her to take her hat off. He finds out that she had grown cat ears. They agree to go to Oshino’s place. When they reach there, they find him crouching down, buring something in the dirt. Oshino asks them to come in and hits the side of Tsubasa’s head, knocking her out. Oshino tells Koyomi that she was already half cat. Tsubasa’s hair turns white, and the cat is revealed.
Episode 13•26m

Tsubasa Cat - Part 4
After supressing the bakeneko, Oshino explains Hanekawa's situation to Araragi. Araragi realizes that he may need Shinobu's powers to help him bottle up the oddity. The problem escalates when Araragi learns that Shinobu has gone missing. Enlisting the help of his friends, he starts looking for Shinobu, but to no avail. The cat soon escapes from Oshino, then goes after Araragi, only this time she sides with him and aids in finding Shinobu. The two had conversations regarding Araragi's interactions with oddities, while they scour the city for the missing vampire. The search proves to be difficult even with the bakeneko's keen sense of smell and hearing. This leads the two to change topics, now talking about Hanekawa's situation. The cat explains that there is a way to confine her without relying on a vampire, that she is the personification of Hanekawa's stress, and that she knows exactly what's causing it. She remarks that Araragi, of all people, can deal with it easily. The oddity then reveals that Hanekawa being possessed by the bakeneko was because of the stress that she loves Araragi, and that the oddity itself may be sealed away for good if Araragi falls in love with Hanekawa.
Episode 14•24m

Tsubasa Cat - Part 5
Araragi is confused after hearing that Hanekawa loved him as he heard from the bakeneko. After an arguing with the bakeneko that "it was a mistake", the bakaneko told him that there was another way to suppress the stress for good, to kill him. Araragi thinks that he could agree with that because he owed Hanekawa his life. But, Hitagi comes upon his mind and he chooses not to be killed. The bakeneko tells him that no one would help him in this situation. Araragi calls out Shinobu's name yelling for her help, and the vampire girl suddenly appears from Araragi's shadow. Everything is settled after Shinobu bites the bakeneko's neck and it reverts back to Hanekawa. The next day before school started, Araragi goes to Oshino's place to bring Shinobu back to him. It seems that nothing is left in the ruined cram school that used to be Oshino's place. After school, Araragi, Hitagi, Kanbaru and Hanekawa went back to Oshino's place searching for him. It seems he had left the place, making Araragi believe that Oshino believed he could handle the problems concerning Hanekawa and Shinobu.
Episode 15•25m
First season of the Monogatari Series, part 1/6. Contains the arcs Hitagi Crab, Mayoi Snail, Suruga Monkey, Nadeko Snake, and Tsubasa Cat from the Bakemonogatari light novels. Thanks to Meme Oshino, Koyomi Araragi, a high school student, is able to remain a human after coming across a female vampire... However, since the incident, Koyomi seems to meet girls who have an apparition-related issue. Hitagi Senjougahara doesn’t weigh anything, Suruga Kanbaru’s right arm becomes like that of a monkey’s, and a young girl, Mayoi, cannot find her way home no matter how many times she tries. Koyomi, a Mr. Nice Guy, ends up helping each and every girl solve her problem with the help of Meme Oshino. (Source: Aniplex) Note: Only the first 12 episodes were broadcast on television; the remaining three episodes were distributed on the anime's website between November 3, 2009, and June 25, 2010.