I had started this anime with great expectations, taking into account the good rating on the page (although I have learned not to trust this) and expecting an interesting and funny romantic comedy, I did not ask for any masterpiece.

instead, I find that romance and our protagonists take a back seat to the story.

Meanwhile, Benio, the sister who bullies younger girls, begins to have a really unnecessary prominence with his "jokes" towards little mashiro. From wanting to lick jam from her cheek, bathing with her, "getting excited" by smelling her underwear, buying her clothes to dress her to her liking, etc.

I hope that with this you get a general idea of the quality of the comedy and this anime in general.

I don't know about the others, but if I watch romantic comedy and the couple is Kobeni and Hakuya, it's normal to expect that they will be the ones who have the most relevance and screen time and not the sister who bullies minors.

Leaving that aside, if we focus on analyzing, the two main aspects, romance and comedy, Unfortunately, I must say that I was disappointed in both respects.
First of all, the comedy is really weak and basic. And even though sometimes, something like that can work, this is not the case. We have only 1 or 2 themes on which most of the comedy is based:
Benio, questionably bullying any boy and then, the mashiro girl, being cute/silly or running away from Benio. While they try to use the other characters for comedic situations, these are anecdotal and just as bad as the main core.

Then, when it comes to romance and relationships in anime, these are just as basic and superficial as comedy, and worst of all is the lack of progression in the story and depth in the characters.

Sure, as the episodes go by, you can see the main characters get a little closer, but again, that's about it. There are no significant moments that move the plot forward, a character background that makes you empathize with them, you finish the story without caring in the least what happens with the characters, because, it's not that anything happens either...

In the end, you end the 12 episodes with the feeling that you're back where you started, without even having enjoyed anything remarkable on your way to this ending.

As you may have noticed, I haven't talked about the plot at any point, and this is because usually, I prefer everyone to see it for themselves. The only thing I'm going to say is that this anime has the most wasted and useless twist I've seen in a long time.

Like all the other sections, it had potential, but they preferred to endure the whole story with jokes in bad taste (benio) and cute things / moe (mashiro), a shame.

I don't recommend it to ANYONE looking for a good romantic comedy/love story. A total waste of time.