 If you liked Cop Craft |  ...then you might like Engage Kiss |
If you liked the mystery, detective show-esq vibe that good part of Engage Kiss have you will probably like Cop Craft Both have smoking protagonists with a dark and mysterious backstory with a magical girl who uses a sword. but that's just superficial details, the biggest and important thing is the tone. The criminal underbelly of a city that sells itself as a paradise, the crimes commited both by human and mistical beings, etc. Cop Craft has a very similar vibe to Engage Kiss, only with much less romance.