Aunt Don't Be Sad

My folks moved far away for work. I was supposed to go with them, but I wasn't sure how I'd cope in a new environment. I told them there was no way I could move, and so I stayed behind.
I ended up living with my aunt. Who knows what we'll get up to...

She was my first love... So different from my mom. She's kind, beautiful, and smells amazing.
Living with her is like a dream come true... A new life together...
I'll help out around the house, she'll help me study, and maybe I'll even tease her a little. So much to look forward to!

Shinichi Hayasaka paid a visit to his aunt Mariko's home, where he had lived as a child.
She was like a mother to him. However, she had become a diver in the years he was away, and he saw her now in all her womanliness: mature, alluring, incredibly sexual.

The protagonist moves from the countryside to Tokyo to start a new job in the spring. To save money on rent, he decides to house-sit and live with his relatives who reside in Tokyo.
Welcoming him are his kind, busty, widowed aunt “Mie,” and his cousin “Yuki,” who is right in the middle of her rebellious teenage phase and acts sharp and prickly.
A peaceful new life was supposed to begin—or so he thought.
“Even if we’re inside the house, aren’t you two being way too defenseless…?”
Wandering around in revealing clothes, defenseless sleeping faces, and the sweet scent right after a bath. Living under one roof, the sight of these two being completely off-guard and full of “openings” pushes the protagonist’s reason to its absolute limit! Taking advantage of those openings without getting caught, and giving in to his desires to make both mother and daughter submit—this immoral life of living together begins now!

The protagonist moves from the countryside to Tokyo to start a new job in the spring. To save money on rent, he decides to house-sit and live with his relatives who reside in Tokyo.
Welcoming him are his kind, busty, widowed aunt “Mie,” and his cousin “Yuki,” who is right in the middle of her rebellious teenage phase and acts sharp and prickly.
A peaceful new life was supposed to begin—or so he thought.
“Even if we’re inside the house, aren’t you two being way too defenseless…?”
Wandering around in revealing clothes, defenseless sleeping faces, and the sweet scent right after a bath. Living under one roof, the sight of these two being completely off-guard and full of “openings” pushes the protagonist’s reason to its absolute limit! Taking advantage of those openings without getting caught, and giving in to his desires to make both mother and daughter submit—this immoral life of living together begins now!

Takuma Sawai feels grateful for his mother, Kana, who is working hard as a single mother. But at the same time Takuma feels attracted to his own mother as a woman. On the other hand, he also admires his aunt, Mari, who takes care of him in place of his busy mother, and begins to see her as a woman too. However, Takuma feels lonely as he is unable to interact with his mother, Kana, who is busy with work.

One day, he sees his mother sleeping on the sofa because she is tired from work. Seeing her defenseless made him feel strange. Currently she is so exhausted that no matter what he does, she won't notice it. "It's just a little bit... just a little bit..." That's what Takuma told himself...