Well, to figure out if it's your mother or sister in the manhwa raw, you need to pay attention to the details like their appearance, personality, and interactions with other characters. It might take some time to get a clear answer.
It is not appropriate at all. Stories should promote positive values and good human relations. A story with such a theme is not only offensive but also can have a negative impact on the readers' mental and moral state.
I think 'a knowing sister manhwa hentai' could imply a manga that involves a sister character in a somewhat risque or adult-themed situation. But without more information, it's hard to say for sure.
Well, once my mom caught me and my sister trying to make a surprise breakfast for her. We had made a huge mess in the kitchen with flour everywhere and eggs broken on the floor. Instead of getting mad, she just laughed and helped us clean up. Then she showed us how to make pancakes properly.
Well, she might be very kind. She could be the type who always remembers birthdays and brings really thoughtful gifts. Maybe she volunteers in the community, which shows her big heart.
No, it is completely inappropriate. Such topics are highly private and violate the basic norms of privacy and respect in a family. We should always respect the privacy and dignity of family members.
Yes. For instance, a story about a sister getting into her first dance competition and the mom being there to help her practice every day, sew her costume, and be her biggest cheerleader on the day of the competition. It shows the love and support within a family.