We'll start with an oldie but goodie. You Asakura is a boy who can see and interact with ghosts. One day, his friend Manta is beaten up by a gang and You comes to his aid. You teams up with a samurai ghost whose tomb the gangsters had broken and wins the day. After that, You finds out about the Shaman Fight, which is a millennial contest in which people like You, who can control spirits, battle to find who can contact and control the Great Spirit and become the next Shaman King. As Shaman King, one would have power and control over everything.

While Shaman King may not have as many of bishounen running around, it does have comedy, action and supernatural duos. You is able to control all kinds of spirits, but his partner is Amidamaru the samurai ghost. And much like Kuro in Servamp, Amidamaru has a really cute form he reverts to half of the time! (And he's pretty sexy when he's in his samurai form too). There is a struggle for power like in Servamp and teams with the same type of supernatural powers confronting each other in battle.

Death City is ruled by Death (Shinigami-sama) himself. He is also at the head of Shibusen Academy, where hybrid children who can transform into weapons, train to become full-fledged Death Scythes after consuming 99 evil souls and one witch's soul. These scythes pair up with their wielders or Meisters and work together to become the best. One such pair is the very serious meister, Maka Albarn and Soul Eater Evans who is a Demon Scythe. They are complete opposites, but are a powerful duo when they learn how to work together. Many battles and interesting pairs will keep you watching and rooting for your favorite team.

Soul Eater is the first thing I thought about when watching Servamp. The pairs are formed by two people, one of whom is able to transform and/or be used as a weapon whose strength is directly related to the wielder and the connection the two have. And just like Kuro and Mahiru, our main protagonists are complete opposites. Soul Eater also brings us quirky characters like Servamp does and quite a few laughs. Like the previous recommendation, it's more on the Shounen side for sure, but can still be enjoyed by all. Also, Soul Eater has a cute mascot form as well!

Humans live peacefully in Septpia, until Majins invade after losing a hundred-year long war in their world of Tetraheaven. ALCA is a special police force that battles otherworldly “foreigners” that attack the human world. ALCA is formed by Logicalists, who have a special power called “Logic”, that allows them to enter into a trance with Goddesses from the other realm. They can use the goddesses' powers as their own, to attack and protect. Yoshichika Tsurugi doesn't have Logic, but when he runs into Athena while helping civilians, she gives him the Logic he needs and they become a force to be reckoned with.

In Luck & Logic, we are also presented with paired up teams in which one of the members is a supernatural being, in this case goddesses, and the other one is a human. These goddesses, like the servamps, can be used in battle by their partners in one way or another depending on their connection. And in Yoshichika's case, like Mahiru, his partner and new found powers come to him by coincidence and as a big surprise. Another thing these two anime have in common is that the bad guys are somehow related to those fighting them! This one's more of a Harem, but it has the same feel to it if you don't mind that there are way more cute girls than hot guys in it.

There is a realm where there exist millions of gods and spirits both benevolent and wicked. The gods make use of some of these spirits when they become their Regalia. Regalia can transform into weapons, armor or other items useful to their divine masters. One of these gods is Yato and he is a feral god of sorts. One with no shrine, no followers and no true name. He is forced to do odd jobs and solves people's troubles for 5 yen each to try an build a following which causes his regalia to leave him. He must now find a new one and confront the other gods and their Regalias while making a name for himself and building new relationships.

Noragami has quite a few similarities with Servamp. There are teams in which one of the partners is similar to a servant and can transform into a weapon or shield and basically be used in battle. The relationship between both team members is crucial to the way they fight, and there are many beautiful characters! Male and female alike. (Though my fave has to be Yato). There's also some serious “family issues” involved in the Noragami storyline, as there are in Servamp. Oh and there are two seasons! (so far...).

After a misterious virus kills all humans below 13 years of age, vampires take over and abduct the surviving children to feed on them like cattle and use them as slaves. Yuuichirou (Yuu) and Mikaela (Mika) Hyakuya are two orphans who are held captive along with the rest of the kids from their orphanage. One day, Mikaela hatches an escape plan to save everyone and it fails miserably, leaving only Yuu alive and as the only escapee. Now, years later, Yuu seeks his revenge as part of the Imperial Demon Army, which is dedicated to exterminating vampires.

Here we go! TONS of Bishies in this one! That's similarity one. Then we have vampires! Bam! (That explains the sexiness). There is also an internal conflict among the vampires and there may or may not be some collaboration and or betrayal between races. And while there are human + supernatural servant/weapon teams, these are a bit different. In this case, the humans like Yuu, have a weapon within which resides a demon that aides them in battle. Again, their relationship is very important to the outcome of their battles, and oh so much more. If you enjoy Servamp, you'll definitely get behind Owari no Seraph. Just keep in mind it's more of a drama, so you won't be chuckling as much as you do while watching Servamp.

After his entire family dies in a fire, Shirou is adopted by Kiritsygu Emiya, a Magus and who trains him in the magic arts. Every 60 years, there is a battle between seven magi to obtain the Holy Grail. Each Magus or Master has their own Servant. Servants are reincarnated souls with superhuman powers and powerful weapons and attacks. One day, Shirou finds himself attacked by a couple of Servants and summons his very own to fight. And just like that Shirou is pulled into the Holy Grail War where he must battle and compete along with his Servant, Saber.

If you didn't already know, Fate / stay night was originally an eroge, so you can be sure there are plenty of pretty boys and even some cute girls too. And there's a boy of each type just like in Servamp! Besides that, we of course have the Master/Servant relationship as well as the fact that the Servant fights for their Master and alongside them using supernatural powers. And again, there is a struggle for power within a specific group who use their servants in order to come out victorious.