Otoko Kirai na Bijin Shimai wo Namae wo Tsugezu ni Tasuketara ittai dounaru? (男嫌いな美人姉妹を名前も告げずに助けたら一体どうなる?) is a romantic-ecchi light novel series I’ve been following for the past few years, written by Myon and illustrated by Giuniu. It currently has seven volumes released, and I’ve read the first six.
Yes, the title is massive, and yes, that pretty much confirms it started as a web novel, Kakuyomu to be specific, before getting adapted into light-novel format. At this point it’s almost a game: spotting a web-novel origin just by the absurdly long title and the recognizable pattern.

The story follows Doumoto Hayato, an high school student with some kendo experience who ends up saving a family of three (a mother and two sisters) from a home invasion while wearing a pumpkin mask. He never removes the mask during the incident and disappears afterward.
A few days later, the two sisters Shinjou Aina and Shinjou Arisa manage to track him down. Their request? They want him to date them and become their lover. Both of them. They genuinely don’t care about sharing as long as the arrangement is just between the three of them. On top of that, their extremely doting mother, Shinjou Sakina, fully supports this idea and basically shoves Hayato into the role.
At school, the sisters are known for “hating men,” but their behavior toward Hayato is… something else. Aina is hell-bent on having his child ASAP, constantly daydreaming about it, while Arisa is a full-blown masochist, desperate to become Hayato’s servant and getting off on being commanded. Both of them are completely unhinged, each in their own flavor.
Compared to the daughters, Sakina is practically tame, though she has her own quirks. She’s a sweet, doting mother who treats Hayato like another son, a very cherished son, which leads to plenty of soft, heartwarming moments… and occasionally some more questionable ones when her affection becomes a little too intense.
And look, I get it this whole setup is absolutely insane. It’s messy, it’s chaotic, and it makes no real-world sense. But that’s the point. These kinds of light novels are meant to be pure escapism: turn off your brain and enjoy the warm fuzzies (and the fanservice).
Does it work? For the first few volumes, yes. I genuinely enjoyed them. But as the series went on, my interest started fading because nothing changes. There’s no conflict, no pushback, no development. When everything is handed to the protagonist on a silver platter, the story loses momentum. The entire plot can essentially be summarized by the premise and, after that, it’s just scene after scene of the girls approaching Hayato in different ways.
This is a pattern that I've been seeing recently in various other novels (like the romcoms where there is only one heroine) which honestly I'm not a huge fan of. It works temporarily due to the novelty, but you get bored easily of the entire thing.
Still, I’ll continue reading this light novel until the end. At this point it’s partly sunk-cost fallacy, partly hope that the author eventually pushes the story into more interesting territory instead of relying only on cute or spicy scenes.
By the way the art is, as you can see from the screenshots I put as reference in this post, absolutely marvelous. The artist does an amazing job showing the girls in their approaches to the protagonist and what can I say, they're really REALLY beautiful.
I've had a look on the site I use to buy them and the artist seemed to have worked on other light novel series so I'm interested in giving them a try just for seeing more of his amazing art. I guess that's one way to attract readers...

Do I recommend it? Sure, if you’re in it for mindless fun, attractive art, and a light novel that never pretends to be anything deeper than what it is. But seriously: disable your brain before reading.