All Chocotto Sister released episodes
Present is little sister?
Choco is delivered to Haruma's house. The new siblings take a trip to the mall to buy Choco clothing, but accidentally lose sight of each other inside.
The first new year
The new siblings go to a shrine for New Year's. Yasuoka, Makoto and the original landlady make their first appearance. Choco starts her picture diary.
The New Manager Has Arrived
Chitose makes her way towards Tsubaki manor, but has many a mishap along the way. Eventually she makes it, thanks to Haruma's and Choco's help.
Black Valentine Day
Chitose plans to give chocolate to Haruma, who has been roped into a special Valentine's Day job by Tamami. Choco receives misinformation about the meaning of Valentine's Day from Makoto. Does Haruma have precognitive dreams ... ?
To buy a bra
After seeing Chitose's laundry and wheedling a demonstration out of the manager, Choco asks her big brother to buy her an item of lady's intimate apparel. A drunken Makoto embarrasses Chitose, but still manages to get herself invited for lunch the next day, along with Choco.
Easy-to-Understand Lecture on Public Baths
Tamami saddles Haruma with yet another job, which winds up being paid for in goods. In this case, T-shirts and some tickets for the premiere of a movie. Haruma ends up inviting Ayano, who is a huge fan of the movie's main actor. Meanwhile, Choco first encounters Kakeru. A water outage causes her to meet him for a second time, when the Kawagoes go to a public bath. Choco is instructed in public bath etiquette by Midori.
Cheerful, Heartbroken, Depressed
Haruma manages to anger Choco by going on a date with Ayano and leaving her at home. When Chitose sees the two of them out, she becomes depressed. However, it seems Ayano has romantic troubles of her own which do not concern Haruma, but rather a young man soon bound for the countryside ... In the end, Haruma manages to redeem himself somewhat in the eyes of Choco and Chitose.
After Ayano invites him out for some drinks to stave off her own romantic woes, Haruma is late to get back home. In the end, he has to take an inebriated Ayano home. Ayano's dreams reveal the truth about her relationship with Kazuya. Choco falls ill after staying up too late, waiting for Haruma, causing her big brother to panic.
Buds of Love
Haruma is ignoring Ayano because of what happened that night. When Kazuya comes to get his ring from Ayano, Haruma shows up to stop it. Ayano tells him about her and Kazuya. The next day he gets flowers as a gift from Ayano and he goes shopping with Choco to get a watering pot
Let's Hot Spring!
While shopping with Chitose at the local shopping arcade, Choco wins a free trip to the Hot Springs for 4. Choco chooses herself, Haruma, Chitose and Makoto to go. After a rehearsal bath at the public bath with Choco and Makoto, Makoto gets a call from her job while at the train station and she ends up not getting to go. Choco, Chitose and Haruma travel via train to the hot springs. When they got there they went to the baths. Haruma found out that it was a shared bath and he tried to hide from Choco and Chitose but after staying in too long he got up dizzy and as he was walking out Chitose saw his private places. That night Haruma couldn't sleep so Choco held his hand so he could.