Experience the poignant narrative of '夏休みの自由研究『婚約破棄観察日記』,' a captivating Japanese web novel. Delve into the drama and romance as you follow the tale of a person recounting the heart-wrenching story of their brother and his childhood friend, whose engagement was cruelly annulled by her fiancée. This oneshot novel is a heartwarming exploration of broken engagement, childhood friends, and the allure of European ambiance. Discover the intricate dynamics between siblings and the intriguing portrayal of villainess noble girls in this emotionally charged literary piece.