ダウナー系お姉さんに毎日カスの嘘を流し込まれる話

In your boring ordinary life, you suddenly meet an older girl who likes to talk about nothing in particular. The manga adaptation of a popular ASMR voice work that has been trending on social networking sites. This is a slice-of-life comedy with a mysterious big sister that will fill in the gaps in your heart. (Source: Kadokawa, translated)