Rakudai Kishi no Cavalry

Part 1.
chapter 1 is just like in manga .

In chapter 2 , a Kouhai name Kagami is introduced who claim herself to be Ikki number 1`fan and clinging to Ikki , uh oh , 1st NTR flag , to make thing worse , his sister who last met 4 year ago also appeared and kiss Ikki right off the bat and babbling all sort of talk that only your craziest imoto can think ( like want to do *it* that worth 4 years of waiting , wth )

But Stella just has to barge in and told Shiziku ( Ikki little sister ) that Ikki is her master and roommate .

Yandere flag pop out , kill kill kill .
And Ikki is now go with nickname Siscon , hentai , most likely used by Stella

However , at the end of chapter , Stella offered to wash his back ( swimsuit put on , too bad ) and while she is at it , she asked if Ikki like breast , our MC became a real man and said Yes , 1 point from me dude , And Stella hugs him from behind silently , don't talk son , don't talk .

Chapter 3 , Shiziku and her roommate name Alice begin their plan , Oniisama 's date , Stuffs happen , like how our little imoto want ikki and Stella ( yah , 3 ppl date , seems Stella want to make sure that the Siscon doesn't do anything...weird ) to watch * I made love with my sister , R-15 * .

Time for bad guys to appear , a terrorist group named " the liberation army " just have to crash the date , Ikki was separated from the group after an explosion and the girls were kidnapped . However , a mysterious guy go with the name Shadow offered his help and the duo infiltrate the Terrorist 's base using that guy ability to conceal themselves .

Meanwhile the terrorist leader who also a lolicon pervert name Bijou toying with our girls and managed to beat Stella with his device Charge mental plus Shizuku as his hostage . He demands Stella to strip , grrr , unforgivable .

Too bad for the pervert , Ikki slashed him , but the one who finish him off is the mysterious guy .

Turn out he is from the same school and an ex-representative , but now a bastard who threaten our MC with some sorts of scandal plus challenge him to a mock battle , the prize is Stella , NTR flag again .

Chapter 4 , back to school , The mock battle begin and the bastard utilizes a skill called Hollowed world which conceal the caster and his attack , what a bastard .

Some F-rank can not win 's craps

But our Stella has to convince our MC that Rank have nothing to do with it and CONFESS TO HIM , yah , you surely better than most Tsundere out there .

With that , Ikki finally has resolve to fight . My weakest will defeat your strongest , and crush the spell , the bastard drop their jaw , oh yeah , crushed like a bug .
At the end of the day , Ikki returns to the dorm and finds Stella , he wants to tell her something .
Such vanilla , much HNNNNNNG .
"It's a promise."
pay the couple will be happy together , no matter how many NTR flags they must face .

Part 2
"Hey Ikki… do you want to… do it with me?"

Ikki's eventual response: "Stella, I love you, and I want to say so proudly in front of everyone. Shizuku and Alice of course, and even people we don't know… even Stella's parents. I think these feelings inside me are the most wonderful emotions. But… if our relationship changes like this right now, I think I would feel guilty in front of your parents. I think I should stand proudly in front of them."

Both Stella and Ikki had mature bodies. It wasn't like there was any fear of what others might think. But still―Ikki thought there was a proper procedure for such important things. Stella was a precious treasure raised by her parents. If he would get involved, he had to at least greet them. He thought that was rather expected of a man.

[... some parts omitted for brevity ...]

Suddenly, Stella entwined her fingers with Ikki's. She gave a firm smile with her feverish expression.

"I said something strange, and bothered you to think about it so seriously. Sorry."

She apologized to Ikki. That expression was feverish and hot, but it wasn't just from illness.

「I love you, and I want to say so proudly in front of everyone.」

…He thought of me that importantly….

In truth, Stella hadn't been thinking of Ikki as much as he had been thinking of her. Stella had only been looking only at Ikki in front of her, but Ikki had been looking toward the people in her background, as well as keeping the relationship between them going into the future in mind as well.

It―made her very happy. Because he was thinking so seriously about their relationship, treating it as something important.

I say that, but… what was I doing!?

Just by taking off her clothes a little, from getting a little excited, she had forgotten her chastity. Not just today. It kept happening recently. A unicorn would shun such a maiden.