I’m a Holy Knight Who Fell in Love with the Heroine, But She Keeps Becoming Part of That Guy’s Harem – Can Someone Please Tell Me What I’m Doing Wrong?!

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Summoned to another world, there’s me, Yamada Ichiro, and the scheming pretty boy, Ryuguin.

The appraisal results reveal that Ryuguin is the Hero, and I’m the Holy Knight.

While Hero Ryuguin lazes about without putting in any effort, I repeatedly venture into dungeons to save the world, always ending up battered and covered in wounds.

Even though I help the heroines grow and forge bonds with them as we survive near-death experiences together, for some reason they all fall head over heels for Ryuguin. Right in front of my eyes, they confess to him and leap into his embrace.

Ryuguin’s harem just keeps growing.

This is the story of how I escape from Ryuguin’s harem party and start doing things my own way.

Associated Names
One entry per line
Seikishi no Ore ga suki ni natta heroine ga zokuzoku to Aitsu no Harem member ni natte shimaundakedo Ore no Nani ga Ikenai noka Dareka Oshiete kure!!
The Heroines I Fell in Love With as a Holy Knight Are Becoming Members of His Harem One After Another, but Someone Please Tell Me What’s Wrong With Me
聖騎士の俺が好きになったヒロインが続々とアイツのハーレムメンバーになってしまうんだけど俺の何がいけないのか誰か教えてくれ!!【本編完結・コミカライズ決定】
Related Series
N/A
Recommendations
Atelier Tanaka (1)
Sono Mono Nochi Ni… (LN) (1)
A Warrior Exiled by the Hero and His Lover (1)
Recommendation Lists
  1. Betrayal and Regret

Latest Release

Date Group Release
04/18/25 Sub29 Translation c251-270
04/09/25 Sub29 Translation c243-250
01/20/25 Sub29 Translation c242
01/20/25 Sub29 Translation c241
01/20/25 Sub29 Translation c240
01/20/25 Sub29 Translation c239
01/20/25 Sub29 Translation c238
01/20/25 Sub29 Translation c237
01/20/25 Sub29 Translation c236
01/20/25 Sub29 Translation c235
01/20/25 Sub29 Translation c234
01/20/25 Sub29 Translation c233
01/14/25 Sub29 Translation c224-232
01/03/25 Sub29 Translation c214-223
12/20/24 Sub29 Translation c213
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7 Reviews sorted by


matosch
matosch rated it
July 24, 2023
Status: c36
I read this story I think to almost of the end via google translate.

The MC is a "kind soul" and "cry baby" but extremly Focused person (no, he is not your typical dence MC).

While he trains and Study like crazy (maybe 3h sleep a day), he is set on getting back to his world.

... more>> The Hero is a Lazy Mama´s kid that only thinks about himself even while having better beginning skills then MC.

While MC trains like crazy and Hero lazying around, MC and Princess get flirty while both complain about Hero and reson for summon. This is going on until the day they leave for the reason of summon, then suddenly the princes makes an unreasonable move.

Over all I can only say the reasons why and how it happens is like many other Isekai story´s where Skills are partly more op then actual training and expirience, Except you are
Spoiler

extremly lazy and self conceidet/arrogant.

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In the end:

Spoiler

While he gets Flirty with the Princes, Holy Saint, Wizard and Sword Saint. Somehow The Hero always ends up with them even when not interacting with them at all.

The Hero will have his way with any Female (forced or not) he wants while his modern ideas are either already known or he himself has so low knowledge of it that people will loose everything or die.

While he is in fight only protected in background and gets cozy with the females, MC gets s*upidly OP in Terms of that world.

Turns out Hero has a hidden Skill (yeah totally boring) where he can make the archievments of MC his own, even Written parts in the world (seriously boring world skill), turns out he has a 2nd extrem skill where he can surpass the strongest in the world for a set amount of time (We know who it is).

After he gets defeated he has to make good in the world with some Godly commandments that don´t let him do bad stuff (seriously where does that come now?) and MC finally gets together with another girl (yeah he consider mouth to mouth feeding first kiss and falls for her?)

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In the end the idea was not bad but the way the story is written is boring and mostly lazy made to fit the standard narrative.

If the MC would be more like the archievments he gained and grow a real backbone as he should have and the Hero would have more intelligence and drive, the Skills more fitting in that world then I could easily give 4 stars. But the way I read it its 2 stars at most. <<less
22 Likes · Like Permalink | Report
Kaorimoch
Kaorimoch rated it
May 3, 2024
Status: c13
I've read almost the entire web novel through google MT so I could see through to the end, which is around 355 chapters. All in all, the story concept is interesting but the author is not talented enough to explore the possibilities the concept provides. Instead, the story is stretched out painfully where one event can occur, can be recited again in the future three times later by the MC, and included in a side story or two from other character's perspectives. Many story elements are also not explained... more>> well enough, including
Spoiler

the method by which the hero manipulates the memories people have

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And of course the main protagonist has to fulfill every single trope of a "revenge against the hero who booted me out" stereotype. There are much more interesting stories with less filler, more logical structures, more believable characters and less frustrations for faithful readers out there that are more worthy of your time. <<less
11 Likes · Like Permalink | Report
durende
durende rated it
September 11, 2024
Status: c78
I quite enjoy this story, and the translation is at the least decent. The only real complaint I have, is that the author seems to skirt around the details of the "betrayal". With a bit more focus on that, this story could hit harder
5 Likes · Like Permalink | Report
Ankiwi
Ankiwi rated it
December 25, 2023
Status: c315
This got a manga adaptation surprisingly. The plot with the hero and the 4 women seems to have ended and been resolved but it's ongoing. It's kinda short ngl you can read the WN in like half a day. There are some things that left me questioning.

... more>>
Spoiler

Why didn't the MC permanently kill the hero when he noticed something was up instead of letting the saint revive him? Also shouldn't his powers have been nulled when he dies? It's also strange no one pays attention to the hero's actions outside the dungeon and attribute it too the MC doing those acts. Like couldn't they just look at him or ask any girl who the hero slept with did he sleep with the hero or the MC. It's kinda confusing. They also say he looks like a pig but then why would these girls sleep with him if he's ugly and awful as they say? He's just a holy knight not the hero so he should have less power over them. Also he obtains a very OP wish granting item early on that could fix everything but he never uses it lol. This is from the WN so hopefully the manga patches those holes up a bit.

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<<less
5 Likes · Like Permalink | Report
abewan
abewan rated it
July 30, 2024
Status: c63
I've been reading this since the manga was released. I thought it was torture p#rn at first, but the story is actually quite nice for a quick read.

It's interesting to see how MC changes from a sensitive person to someone more determined. He focuses his efforts to improve himself and get back home.

The Ntr/betrayal/sudden change of the people he knows is frustrating, but is important for character development. It can be hard to read, but also show his growth. How he handles setbacks and gets stronger is a part of... more>> the story. <<less
4 Likes · Like Permalink | Report
NakuyKi
NakuyKi rated it
December 11, 2024
Status: c196
To sum this novel up... It's a therapy isekai.

It's not "absolutely terrible, " but if you want a high quality adventure, you're better off looking elsewhere.

This story is about different members of the cast working through heartbreak or guilt over how they treated the MC.

Plot Spoil:

... more>>
Spoiler

TL;DR The "hero" allegedly uses a reality bending power to swap Yamada out of the girls' (And the rest of the world's population's) memories with his lazy ass. The girls then think Yamada was the disgusting loser of the party and treat him badly. Eventually, many chapters later, they break through the memory alteration, but they have to live with the fact that they remember treating the person they fell in love with as tr*sh.

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It's a pity party for the MC that is kind of depressing to read.

That's all I have to say about this one since I caught up to the current translated chapter. <<less
3 Likes · Like Permalink | Report
jehejehe
jehejehe rated it
October 6, 2024
Status: c98
up this point, theres not yet significant explanations on why every female ML/MC got affections to always jumping on the other hero. Ridiculous lmao

Anyway, there are two conflicting memories bugging Puru the Elf on why she had other version of reality where. They met to talk this matter and concluded its one of other hero's skill or forces behind? IDK, why ML looks like still have feelings/affection? Towards these women eventhough there is a devoted one waiting for him.

Yeah, I love the chapter where ML got enough of these NTR... more>> like scene after their last dungeon subjugation wherein he swiftly beheaded the other hero but allowed the simp healer to attach the head (perform healing). That was their last meeting but at this point chp98, they gonna meet again I guess coz the scumbug other hero and co opened a seal of greated trouble. <<less
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