Name of Weapon: Seion Bu-meran
Powers: It is a two-bladed crescent-shaped boomerang that is a bit larger in size than Serene. It is very durable, yet light. It could either be thrown or used in close-range like a double-bladed sword. Once thrown, it flies towards the direction of the throw then comes back in an arc-shaped path like a normal boomerang. It has to be used in caution because catching it will be difficult unless mastered. The blades can easily slice through flesh and most armours. More durable armours could be dented by it, dealing damage through the impact. The unique thing about this weapon is that it is made according to Serene's chakra type. She can infuse her own wind-type chakra into it to make it spin faster and somewhat control the flight distance and how wide it arcs before coming back, but the shape of the flight path must still be an arc, or the boomerang will fly off course.
History: It was made by Serene herself after learning how to forge metal from her father, who was a blacksmith. She has been fond of boomerangs and she has shown great skill, precision, and timing in using it. She also needed a weapon to use for her upcoming life as a ninja, so she decided that a large boomerang might be git for her. She designed and used some of her own chakra in making it so that it can fit her preferences and she can infuse wind chakra to enhance its performance.
How you got it: It was made by her a month before graduating from the Academy.