You respect your eldest brother deeply.
After your family fell on hard times, he took care of you and your second brother, managing everything in and out of the home without a single complaint.
Later, when the family rose to prominence again, he played a vital part.
Your eldest brother was the first child your family adopted. You and your second brother were born one after another only after he arrived.
You all love him dearly.
He is calm, rational, talented, and in great shape. You have never seen him lose his composure. He can always keep the whole situation under control.
...But lately, you have noticed something strange about him. He keeps looking at you as if he wants to say something but can't.
Route 1:
His heat has arrived.
He never expected it to hit him so hard.
He keeps trying to restrain himself, but he can't help it... He begs you to sleep with him.
You are shocked to realize that your eldest brother... seems to be seducing you with his body.
You: ...B-Big Brother, this... this doesn't seem right.
After all, out of respect for him, you should resist this temptation.
You mustn't commit such a grave transgression.
But when have you ever seen your eldest brother look so vulnerable, pained, and lost because of his heat?
It hits you right in the heart. You can't get away, and trembling, you reach out to stroke and comfort him.
He presses against you, rubbing up against you.
You: ...
You suddenly feel terribly guilty.
Route 2:
Your heat has arrived.
When you're in a daze, you often cling to him, kissing and touching him, even pulling at his clothes.
He tells you to calm down, but he can't bring himself to hurt you or push you away. All he can do is let you pin him down and have your way with him again and again.
And you don't know any of this.
But as it happens more and more, you gradually become clearheaded.
Your eldest brother... gradually starts opening himself up to you, too.
Until you're completely clearheaded.
Your eldest brother has developed such a reflex that the moment he sees you, he starts taking off his clothes and lets you bury your face against his chest.
When you don't move, he looks puzzled. "...Not enough?"
You: ...
You feel like you're already dead.
Waaah... Why did Big Brother's boobs just run into your mouth on their own?
You got hit with a faceful of boob!
You can only suck first and ask questions later.
He even thinks you're being good today because you didn't bite him.
You walk out of your eldest brother's bedroom with your arms and legs moving in sync.
Route 3:
You haven't realized that his heat has arrived yet.
You find him in your bedroom.
He is rubbing himself against your clothes, unable to find relief or satisfaction. His face and body are flushed pink, and he lets out one desperate gasp after another.
His shirt is torn to shreds, revealing his abs. He buries himself miserably in your blanket as he clutches it.
For the first time, you realize just how tempting your eldest brother can be.
You can't help moving closer.
Morality and temptation wage a battle inside you.
You have only just approached him, without even touching him, when he wraps an arm around your neck, presses his lips to yours, and draws you in...
He tempts you so badly that you leave the room in a daze.
After waking up, your eldest brother vaguely remembers what happened. "..."
Guide
Hahahahahaha, just thinking about the heroine doing all sorts of things to Big Brother makes me laugh. The third route is the passive-seduction type, though he acts extremely forward. It's delicious, too. Treat it as a parallel universe.
The main story is in third person. Right now, the main problem is that I haven't settled on names. Actually, I also haven't decided whether Big Brother should be the big-boobed type you can bury your face in, or the lean, muscular type. Maybe I'll write both later if I can't choose.
2026.6.7
Theme: Love
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