Ai Hayasaka

Despite her young age, Ai can quickly shift to different types of personalities to suit various kinds of situations and scenarios. She has four distinct personas which, aside from having a specific purpose, has its own unique background and upbringing.

As a maid, she is level-headed who carries out duties flawlessly and while she occasionally give her mistress grief over her absurd demands, she still loves her deeply. In her school camouflage version, she is a fashion-conscious schoolgirl with a penchant for rule-breaking and her liveliness is her trademark. The anti-Miyuki version, Haysaca-chan, is a doe-eyed maneater who picks up men in Roppongi and Azabu and leads them around by the nose. Haysaca-kun exists to counter the unpredictable Chika Fujiwara and has the backstory of an Irish orphan who later graduated at Harvard then ended up as a butler who becomes a crybaby when remembering his past.

In reality, she is just a kind girl who deeply loves her mistress, whom she considers a sister and is willing to go against the Shinomiya house within reason like sneaking Kaguya out of the main house to see the summer fireworks.

She is also known to be very sensitive about the fact that she never had any experience of dating a guy.

Since the Kyoto class trip, Hayasaka seems to have dropped her gyaru persona around her friends, who now see her as somewhat distant and harsh. They interpret this as a sign of heartbreak.

• Ai puts a deck chair in the bath when soaking. • Ai is shown to have a wide array of technical knowledge, such as being able to build her computer and being up to date with the specs of the latest smartphones, able to build in devices into her beret and other clothing. • Ai is said to enjoy "hydraulic press" videos. • Ai is the second person to describe Miyuki's singing like a sea cucumber's intestines. • Ai is the daughter of Shinomiya's group manager. • In Chapter 102, Ai is listed on Miyuki's phone as "Haysaca," and is shown to be texting him "OK, good night." She has a good friendly relationship with him after getting rejected under an alias and seems to admire him for his kindness and trust. However, many of their classmates think their relationship is something more. • Ai is considered the snarkiest member of the main cast, but this is to her detriment. • Ai seems to have a mother complex. • Technically, Ai is the wealthiest out of the main cast, with a disposable income of up to 40 million yen. This is because she had stable employment as Kaguya's valet for ten years. • Ai is one-quarter (25%) Irish. • Ai wears corrective contact lenses. • Ai has a notebook full of fantasies. • She shares her first name with Ai Hoshino from Oshi no Ko, which is also written by Aka Akasaka.