I don't leave reviews for the dramas I watch but I definitely wanted to speak my peace on this specific drama.
For context, the only other LGBTQ+ Japanese dramas I've watched are Cherry Magic and Joshi-teki Seikatsu. The former has more of a romanticized and sanitized version of gay love while the latter had a deeper story but not enough time to execute it to complete satisfaction (imo).

Now for Koisenu Futari. It's simple storyline - woman doesn't understand or want love -> finds someone who feels the same -> they start living together. Since it's a slice-of-life drama, this "sameness" might not appeal to some but I found it fitting. Afterall, to me the most important and riveting aspects of this drama is its acting and the bonds that slowly grow. The FL, Sakuko, is pretty much a regular working, able FL except that she doesn't get marriage/love and sometimes doesn't understand social cues when it comes to discussing some touchy subjects. The ML, Takahashi, feels like the usual "quiet, introverted, weird guy" that lives in a house by himself but in the last two episodes he seems to open up which was nice as he's so guarded throughout.
There are some other characters, like the FL's sister and the FL's work colleague who give good storylines to work with--but they're mostly there in order to supplement the main leads own stories (which makes sense because of the 8 episode count).

Now, this is a story about an aroace woman and man--the FL is on her road to discovery of her sexuality while the ML (who is 12 years older than her) is mostly at ease with himself (he's just on edge with everything else lol). I can't speak to the actual truth in the FL's journey, but the execution feels genuine enough. I like that even though she's learning from ML, in the end she comes to her own conclusions.

The whole core of this drama and the message they seem to be trying to send out is understanding one other and adapting to live amongst (or apart) from each other. I feel like they tied this up nicely with the finale. The main leads don't "suddenly" realize their love for each other (thank God) which was an actual fear of mine. The finale ties up the main storylines nicely (while leaving a thing or two ambiguous) and it's in line with what the drama has been talking throughout.

There's nothing genuinely horrible about this drama but maybe not outstanding either. The whole juice is within the genuine representation and the characters' journey through this part of their lives. The score was *there* while there was some moments in terms of videography, it was pretty usual I guess. TLDR, watch this drama if you'd like an unique LGBTQ+ japanese drama and an easy watch.