Shachiku Succubus no Hanashi is a short comedy/slice of life manga with excellent artwork, which is unfortunately brought down by a repetitive story and one note characters that overstay their welcome.

Story - While the idea of a succubi interacting with a guy who just want company was at first a decent gag, this one idea eventually made up almost the entirety of the manga and this repetition was uninteresting. Any other plot points that were introduced such as people's declining vitality (which seems like it might impact the main character), are either quickly ignored or never explored meaningfully. This manga would have been much better had it been cut in half at the minimum.

Characters - Beginning with the main succubus girl, she is only defined by her tsundere attitude towards the MC, and the lack of depth becomes more annoying as the chapters add up. Many of her tsundere actions also make little sense as at their first meeting she asks with a straight face if he wants to see some crazy fetishes yet is later embarrassed by handholding? Based on the setup I understand if she is embarrassed by more mundane romantic occurences but not anything physical, based on what the story implies the usual dreams of the men she 'works' with are like. Furthermore, it is never actually shown what her job is like with other men, so it is unknown if the MC's purity is actually rare. Given how common loneliness is in Japan I wouldn't be surprised if his desires are not actually unique.
Moving onto the male MC, he is also quite generic, and his only character development feels incredibly underwhelming because both before and after he is an incredibly selfless guy, the only change being that he becomes slightly more proactive. This combination of main characters was okay for the first few chapters but based on the aforementioned complaints they did not hold up for over twenty.

Art - The characters were very attractive and consistently drawn (especially the various succubi), and the expression changes of the main character, even if they didn't fit his personality, were humorous and well drawn. The paneling was easy to follow and had a good balance of light and dark spaces. The backgrounds were often very detailed and not too sparse, which is a nice change of pace from many non-serialized series. The art was definitely the highlight of this manga and the main reason to read it (and where most of my score is from).

Enjoyment - Reading this manga was relatively enjoyable at first between the artwork and decent comedy, but this enjoyment declined over time despite its short runtime due to repetition. If this had been limited to around 10 chapters or so, I would have enjoyed it much more as the same gag and character traits wouldn't have been drawn out too long.

I would only recommend this manga if you are either a fan of the art style or enjoy hot tsundere girls acting embarrassed. On the other hand, avoid it if you are seeking developed characters or engaging story.