Aishen Qiaokeli-ing...

Both shows have a love deity that has a mission who asks for the aid of the protagonist. In "The World God Only Knows", the protagonist is obligated to do this task or he'll die while in Cupid's Chocolate he does it cause he feels responsible. They both have serious drama tone while having a good comedy. Both have gorgeous characters and good character development although Cupid's Chocolate does better in this part. Both are a cut above in the genre. Both are crafty main protagonists while Cupid's Chocolates reveal it much later, TWGOK reveals it early. The difference is that TWGOK has some world level goal at the end while Cupid's Chocolate doesn't. The protagonist in TWGOK is galge gamer while in Cupid's Chocolate is someone who likes an ordinary life without a hassle. read more 

The story is a lot like The World God Only Knows. The approach is different, but still, a love diety (in this case, a cupid of sorts) watches and aids the MC in his endeavors with the many girls that fall in love with him. Each time he resolves the situation, they lose the memories of their romance. However, the memories they lose aren't the memories made with the MC, as those are real. The thing is that after they all share a cake with Haoyi, memories become implanted in their minds that leads to them feeling deep love for him rather than just being infatuated. Its THESE memories which are problematic because Haoyi has no idea what they're talking about and they bring it up in front of people. So, to correct that, he cures their curses by locking in the romance, and then the fake memories go away though they still may be left with love for him. Whats different for sure is that Aishen is LITERALLY A CHINESE CARTOON! But dont let that deter you because the art is absolutely wonderful. read more 

This show includes the main character going through winning each girl's love, in separate arcs, in a harem situation. Although, in season one the girls forget straight after. Still many girls, and each one must be won over / must have their desire filled. Same sort of thing. 

Somewhat smart mc who has to deal with the problems of the many harem girls. Both also have a supernatural element 

Both have many girls after the guy, even when the case is finished later on girls go for mc tho late in later. Both mc looks for girl's problem 

The art is very well done in both shows. Harem is present, although Aishen is presented in a more straightforward manner. Meaning that the main heroine(s) expresses thier feelings more sincerely and doesnt beat around the bushes. I enjoy Aishen and I know you will too. :)  

Both are harem and have amazing art styles. Xueli and Marika are quite similar in personality-wise as they both are infatuated(to the point of force) with the MC. Likewise Onodera and Zitong also have some similarities. Chitoge and Tang Xuan are both tsundere as well. Though one is Japanese while the other is Chinese. They're both really good anime. 

Chinese series, about 10 minutes, romance, supernatural, etc. Aishen is more on the side of comedy, however Yaoguai is more dramatic. if it does not bother you that the language is Chinese you will surely like it