Anime 51417 Engage Kiss Userrecs

Aside from very similar visuals and animation, both animes have the girls do most of the fighting and have a similar dynamic with the male MC. Also a lot of kissing. 

Both have similar concepts: boy has to stop the destruction of his city by kissing a girl - whereas Date A Live to seal their power, Engage Kiss is to do the opposite. Both are fighting against supernatural forces and there's a taskforce dedicated to stopping them, which one of the main girls who is in love with the MC also happens to be a part of. Engage Kiss is also illustrated by Tsunako: known for her work as the illustrator for the Date A Live light novels and anime. You can see and feel the familiarity of D.A.L within E.K's character designs and art style  

The MC's power in date a live is the opposite towards the MC in engage kiss. Shido (DAL MC) has to kiss a spirit in order to seal their powers, while we have our MC in engage kiss (Shuu) has to kiss Kisara in order to get her powers out. Both of the MCs are playboys, in which the girls love them very much. 

Rehashing of the same concepts and structure but with some small changes. If you like one you would definitely like the other. Different art design, but the animation and production value in both shows is good. 

1.The power of music is replaced by the power of love. 2.D2s and "Demons' have the similar designs ,so similar in fact if one of them was in the other anime,Nobody would be able to tell them apart. 3.The fighting style used to fight creatures in both anime are basically the same,more guns while some use swords. 4.If u liked takt op then i don’t see any reason for you to not watch this. 

They are both mixed-media projects that started out as a one season anime series, with a mobile game that serve as a follow up to the anime. Namely Takt Op and Engage Kill. 

both have multiple girls follows one male protagonist. both the girls power up through kiss. in Campione: information is passed down through kiss, in Engage kiss: the girl sucks out the memory of MC. both the girls do most of the fighting. both the main girl is not normal human, in campione a god, in engage kiss a demon.  

I'm surprised nobody made this recommendation because out of all recommendations these 2 are the most similar to each other. Both anime feature the protagonist working with a younger girl with special powers to fight monsters in a particular city. Both anime have multiple private agencies working for security of the city. Both have very similar character relationships. In both anime , the protagonists work for the agency of a slightly older childhood friend who they like. Black bullet is a bit darker but Engage Kiss has more slice of life scenes. Black bullet is set in a post apocalyptic world while engage kiss has a futuristic setting. Both protagonists are searching for their parents who they lost at an early age in a similar way. In both anime the Protagonist, the loli and the childhood friend share a bond and work together to protect their city.