If there is anyone who fits the big brother role well in every way, it most certainly has to be Edward Elric. Full Metal Alchemist stars Edward and his younger brother Alphonse, as they embark on a journey to obtain the philosopher's stone. Prior to the journey, Edward and his brother tried to resurrect their deceased mother through via alchemy. Things become disastrous when the experiment fails, which led to him losing his brother and two of his limbs. Fortunately, Edward was able to use his skillful alchemy to bind Alphonse's soul to a large suit of armor.

From the beginning of the show, Edward already displayed how much of a big brother he truly is to Alphonse. He made sure to look after his brother, and that he wouldn't suffer the same fate twice. Whenever Alphonse would run into trouble, Edward would always be there to reinforce the fact that things would be fine. A great example of this is when the two enroll in the military, and Alphonse lacked the ability to stand up to Roy Mustang and the other strict officers. Edward stepped in to encourage Alphonse, that no matter what happens he would always be by his side to cover for him. Edward became a mentor for Alphonse, who became much stronger throughout the series due to his older brother's motivation to overcome adversity. Alphonse is seen as the more reserved of the two, and a bit clumsy at times. Edward on the other hand, is the more mature and level headed, who approaches everything with a strategic purpose. This contrast in character, is what really helped created a beautiful chemistry between the two, which is a beauty to watch.

Another great example of the oniichan is none other than Tooru from Hitsugi no Chaika. This a great example from the female point of view, because Tooru becomes a mentor for Chaika throughout her journey for meaning in life. Tooru is 20 while Chaika is 14, and the two develop a very strong relationship well into the series. While the two aren't related in any way, you can certainly see a chemistry between them that would make you think otherwise. Chaika is a troubled soul who often finds herself in harms way, because she is adamant on finding the clues to who her father is. Her curiosity is what gets the trio into trouble, because she often wanders off leaving Akari and Tooru to fend for themselves. Chaika walks with a coffin that comes equipped with a high powered magic sniper, that when used, can obliterate even the strongest of foes. However, she doesn't fend well for herself at times, and so this is where Tooru comes in to help bring her ponderous mind back to reality.

Whenever Chaika ever feels like the world around her is crumbling, Tooru is always there to remind her that he is always there to protect her. This sense of protection gave Chaika more confidence throughout the show, and really helped to bring the two together. Chaika learned a lot from Tooru's confidence in battle, which eventually led her to overcoming her own shyness and clumsiness when under pressure, especially when collecting items to solve the mystery of her origin.

If there is one person who truly embodies the oniichan status, it most surely is Sora and his sister Shiro. The story is about the two NEET siblings who find themselves plunged into a video game realm, who then come face to face with Tet, the god of games. Prior to this encounter, the two had become a legendary tag team and used the name “Kuuhaku” to defeat their opponents online. It was at that moment they received an email from an unknown source, challenging them to a chess match. From there, their lives changed forever. Tet welcomes the two to Disboard, a world where disputes are not solved by wars and trivial quarrels, but rather high stake games. Their new goal now is to unite all of the gamers in Disboard, defeat Tet, and become the new reigning champions of the gaming world.

This is such a great example of oniichan love because right from the beginning of the show, you can see how close the two siblings are. Sora almost never leaves his younger sister behind, no matter where they go. Even when they play games together in their bedroom, Shiro sits directly in his lap as if the two were connected. When they arrive at Disboard, Shiro starts to show signs of stress and anxiety, and so Sora steps in to remind her that as long as he is around, they will never lose. In every battle they encounter Shiro makes a mistake, but Sora makes up for it by coming to her rescue, especially in the final battle with Tet. This wonderful display of sibling affection is why we decided to choose Sora as the best oniichan.