 If you liked Darling in the FranXX |  ...then you might like Engage Kiss |
While both shows aren't of the same genre, they both have an interesting love triangle involving a dark haired main character, a pink haired girl who ain't human, and a blue haired girl who the main character has known for years. Not to mention that both are anime originals produced by A-1 Pictures.
report Recommended by Alpha-Nine