Aipii

Aipii (あいぴー) was the third of the Four Kizuna AI, but from 14 June 2020 until her retirement, she then, along with her sister Love-chan, was placed in charge of their own channel called appropriately love-pii channel.

Personality
Aipii's character is energetic and cheerful. She is fond of playing video games and also she has a tomboyish personality (denoted for her short haircut, her hoodie and her shorts), in comparison to her sister Love-chan, who has a more delicate and refined demeanor.

Background
Originally, Aipii was one of the Four Kizuna AI, which was a initiative of the at the time Kizuna Ai's company, Activ8, to diversify Ai-chan's content. The project was ill fated because of a series of managerial mishaps and rumors, along with a series of scandals related with the mistreatment of virtual talents on other VTuber companies.

Eventually, several decisions were taken, such as giving Kizuna-Ai new "sisters" identification markers and a nickname. In the case of Aipii she was given a hairpin with the design of a yellow asterisk (*). Nonetheless, after a deep restructuring of A.I. Channel and the creation of Kizuna AI Inc., Aipii (and by extension her sister Love-chan) was given a new channel and she will no longer feature on the Kizuna AI's channel. The transition was concluded when she was given a new 2D avatar and "Aipii" become her official name.

Retirement
After a couple of hiatuses on the Love-pii channel, on the 08/17/2020 the official Kizuna A.I. Inc. Twitter announced that Aipii would cease all activities (retire) after the completion and release of Uinatsu. No official statement was given as to why Aipii would retire.

On 13 September, Uinatsu was released and Aipii officially retired. After a couple of days Love-pii channel was changed to loveちゃんねる, and her sister Love-chan returned to streaming.

On 16 September Aipii made her last message to tell her fans that she saw the tribute video "Stargazer".

Trivia

 * Aipii's new image is similar to Kizuna Ai's A.I. Games attires, she wears a hoodie and a choker necklace. Her hair is now blue with pink lights and yellow eyes.
 * Her new avatar still retains the identification marker she used when she was Kizuna AI, the yellow asterisk. But this time it is the design of her left earring, Also Aipii's new attires include at the center of her chest, a pin with the shape of Kizuna Ai's Pyoko-pyoko, symbolizing her connection and origin with Kizuna Ai.
 * Aipii's Birthday is on 14 June, the date the third Kizuna AI "installed" her new personality pack.
 * Her name and her sister's name are puns of the name of Kizuna AI, which it is at the same time a pun with the Japanese word for love, Ai(愛).

Further readings

 * あいぴー - Nicovideo Encyclopedia
 * あいぴー - Pixiv Encyclopedia
 * aipii - Moegirl Encyclopedia