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Identidad: It's a fanmade MSA anime and manhwa.
Fondo: In Tokyo, Japan, a mom named Akane discovered that her well-behaved 24-year-old biological son named Hayato who addresses Akane as mom whom she wanted him to be another girl named Himari's boyfriend had given his hoodie for the well-behaved 18-year-old first protagonist named Sayaka from the Hashiguchi family who is Himari's younger sister who is well-skilled in cooking, baking and cleaning properly, to keep her dry from the rain out of compassion just because Sayaka forgot to bring an umbrella without knowing that it'll rain today because she declined to wear his hoodie saying it was against the rules but he nicely insisted and she did. Other unnamed random moms in her neighborhood saw that, the news spread like wildfire, convinced that Hayato is Sayaka's boyfriend and they're dating because they were seen multiple times going out in dates together. So, all they and Akane wanted was answers from Sayaka's parents because they would like to know who she is, indicating they want to know what her name is because they feel like Himari wasn't the bread winner and instead it was Sayaka making a lot more money than she was. But the reason why he chose Sayaka and not Himari was because Sayaka was actually the youngest daughter. . . . . What happens next?