Complex sentence: In the novel and manga, Toshinori attempts to kill Hirono Shimizu while she is drinking water from the well by strangulation, she shoots him twice in the stomach, though she is unaware he is wearing a bulletproof vest.
Split into simpler sentences: In the novel and manga, Toshinori attempts to kill Hirono Shimizu by strangulation while she is drinking water from the well by strangulation. She then shoots him twice in the stomach, though she is unaware he is wearing a bulletproof vest.