The Investigator of Mueller
It has a nice non-cliche start and the first arc has an interesting narrative. The second arc slowly goes down and from episode 80+ it resets back to cliche kdrama material. Dunno if author can recover the story from here on but I am not optimistic...so down voted from 5 to 3. Update: the raws don't show any sign of hope for the story so I'm dropping it.
Honey X Honey Drops
Disgusting. I absolutely hate the heroines that this mangaka creates, the weakling submissive good-for-nothing shallow shits that all they know is "do what you like with me and I fall in love with you anyway". Unbelieveable storylines, asshole MLs, zero character development, forced triangles, sexual harrassments and borderline rapes that are supposed to be romantic (!!)...urgh, gimme a break. I wish mangago had a "block author" button so I wouldn't waste time on recommendations like this.
30 Minute Walk
The first 2 chapters were nice and somehow unique. I wish it ended there...but it didn't and everything started to drag. The spoilers say even after 150 chapters we are still in square one so I did the wise choice and dropped it. The MCs are cute and this is good for a light read when you don't get invested.
Sekirara Ni Kiss
This mangaka has a nice art but s/he really needs to hire a scriptwriter and just stick to the art.
Reminiscence Adonis