The "TST" (Total Strategic Trapping) belt serves as the central plot device, driving the comedy and the tension by forcing Mitsuki into awkward situations.
It leans heavily into the "imouto" (little sister) tropes popular in the early 2010s, similar to series like Oreimo . Recently, My Sister is Unusual
Recently, My Sister is Unusual (Saikin, Imouto no Yousu ga Chotto Okashii n da ga.) is a notorious entry in the "little sister" anime genre that blends supernatural comedy with high-stakes ecchi themes. Originally a manga by Mari Matsuzawa, the series gained attention for its controversial premise and over-the-top fanservice. The Plot: A Ghostly Ultimatum The "TST" (Total Strategic Trapping) belt serves as