Honestly a good read and with some wisdom. Basically speaking in olden times single men in their 30's without any experience was rare. Today, especially in Japan it isn't one bit unusual. I give props for helping japanese adult men with this manga (they really need it).
As for the concept in general? I am in the same age bracket group, i would rather live with my parents than with 6 random people, too much hassle and conflicting opinions. 6 people, 6 different household rules. Those 3 rules? Mildy stupid, coming from bunch of 34-36y olds. (Talking about visitation and romance).
MC for his age is a major let down, good things he will be improving, but man talk about being annoying. Somethings come with age for example art of not giving a fuck about other people, with age it just comes naturally, shyness? It also decreases with age. I think author portrayed incorrect picture of 34-36, sounds to me more like at best 20-24y olds.
As for the pair relationships (MC and FMC), who knows? If author will decide a more comedic approach, it will turn out as a misunderstanding and her "relationship" was a hiccup i.e. He asked me out, i agreed, he was pissed by me and we broke up.
A more realistic and hard hit to the balls for readers who want to learn: Sadly it is being normalized for men not to have any experience in their 30's (Not a big problem in Europe or US but trends are going there, Japan is far ahead there). What those men have to realise, that majority of women that they will meet will be already experienced and not just one guy but 1> (hopefully not to the extent of double digits), with children and baggage from previous relationships.
Currently, she carries baggage i.e. previous bad experience is being projected now onto MC (he has to deal with it, not the offender).
In any case, good read. In a sea of shounen, harems, school settings (basic stupidity) this one brings some wisdom that those adults can learn (and teens). And 15ch hopefully will teach people about boundaries, a very important subject that some people cannot maintain regardless of any age. Also the girl is freaking weird, i wanted to say she was autistic but she has episodes of being a normal adult, damn inconsistent.