The 20 Most Popular Twins In Anime, Ranked

Despite being the same age, Yuichiro takes on the role of an older brother. He's serious and goal-oriented to the point where he can come off as cruel. But in reality, Yuichiro is desperate to keep him and his brother alive, and is absolutely terrified that he will fail.

Muichiro doesn't really understand his brother until the two of them meet with a terrible fate. After that, he temporarily adopts his brother's stoic personality before rediscovering his own.

For many anime fans - especially millennial women - these two are some of the most iconic anime twins out there. The two of them are an integral part of the Ouran High School Host Club. They play up their appeal as twins who are maybe a little bit in love with each other.

In reality, though, they have a more normal relationship, and the two have different personalities and goals. Both have a mischievous streak, but Kaoru is a lot more mature.

The connection between these twins is only vaguely hinted at in the anime, and some of it is definitely a manga spoiler, so we won't go into full detail.

But these twins have a difficult relationship. Currently, both of them are supernatural entities with opposite views on how the supernatural should interact with humans: Hanako believes that rules should be followed, while Tsukasa thinks that everyone should do whatever they want. But what Tsukasa wants to do involves manipulating others and causing huge amounts of trouble.

Some of that manipulation revolves around their troubled past: while they were alive, Hanako ended Tsukasa's life. The reason isn't fully explained in the anime, but Tsukasa seems to only care about this for the purposes of using it to make Hanako feel guilty.

The Miya twins are some of the toughest foes that Karasuno has to face. Osamu is a talented spiker while Atsumu is an incredible setter. Osamu tends to be a bit more chill, while Atsumu is more hot-headed. Still, both of them are extremely competitive and work hard to bring their team to victory.

Maki and Mai Zenin were once close, but these days they can't stand each other. Both of them were ostracized by the Zenin clan - Mai for having a weak Cursed ability and Mai for having none at all. But while Maki decided that she was going to strike out on her own, Mai was still invested in trying to please their family and earn their favor.

This created a rift between them that's not going to heal without a lot of therapy.

Two people are reincarnated as the twin children of Ai Hoshino, a teenage idol with major star power. The boy, Aqua, used to be Ai's doctor. The girl, Ruby, was once a twelve-year-old cancer patient at the hospital where the doctor worked.

Both of them remember their own pasts, but have no idea about their twin's origin. As such, they develop a sibling relationship, with Aqua being outwardly disdainful and inwardly protective of Ruby, while Ruby complains but is secretly grateful.