Sister (cuckbro)

Before Liam could respond, a beautiful woman entered the room. She appeared to be around 18 years old, her skin was as white as milk, and most importantly, she had enormous breasts!

Liam was taken aback for a moment, those large mounds of flesh jiggling with every step the young woman took.

“Brother, thank God you're feeling better!” The young woman shouted happily. She was so happy to see her brother looking well that she didn't even notice Liam's lewd glances.

‘This girl... is...’ Many memories flooded his mind, providing him with all the information Liam needed.

“Thank you, Sophie.” The girl's name was Sophie, an S-class adventurer and the younger sister of Liam in this world.

According to the memories in his mind, he and Sophie had a very good relationship and were very close. Liam was also against Sophie becoming an adventurer, especially because now his little sister had to spend a lot of time surrounded by men.

[New mission available: get Sophie to take you on one of her adventures. Reward: improved physical strength.]

“Mom was very worried! The healing magic seemed to work, and you were on the verge of **** several times. It's a miracle you survived, brother.” Sophie was a very loving sister, and her concern for Liam was undoubtedly genuine.

“Sorry for worrying you, Sophie, but I'm fine now.” Liam thought for a moment about how to steer the conversation so he could ask her to take him on adventures with her.

Sophie had always been an extremely intelligent girl, and when she saw her brother looking down, lost in thought, she knew instantly that he wanted to ask her for a favor.

“I know that look. Do you want to ask me for another favor?” That phrase brought Liam another wave of memories. Apparently, the old Liam used to ask his younger sister for favors all the time, from magical objects to asking her to beat up people he didn't like.

Liam decided to ask directly, “Yes, well, not exactly. I just wanted to ask you to take me on a mission with you.”

Sophie looked at him for a few seconds, not knowing how to respond. It was the first time her brother had asked her for a favor like that, and she wasn't sure she could take him. Liam wasn't a strong person, taking him on a mission would be dangerous, but even so, she couldn't deny her brother's request for help.

“I don't know why you're suddenly interested in traveling with me, but okay. Maybe you can gain some skills if you travel with me.”

[Mission complete: Your physical endurance has increased significantly.

Next mission: Get your sister to fuck another man]

“I didn't think it would be so easy!” she almost shouted with excitement. Her first mission was so easy; it would be great if all the following missions were this easy.

Over the next few days, you prepare to go on your first mission with your sister.