Yotte, Hatsukoi wa Shoumei sareta. - Delta to Gamma no Rigakubu Note

Tsuna Nagai High School has built its reputation as an institution devoted to the sciences, and first-year student Sho Izuta is determined to leave his own mark on campus. His ambition is a modest yet meaningful one: to revitalize the school's ailing Biology Club. But what begins as a simple club revival project soon draws him into something far more captivating when his classmate Rio Iwama joins him in pursuing an intriguing puzzle. At the heart of their investigation lies a cherished campus legend. It is said that any student who witnesses the two cherry blossom trees near the school forming the shape of a heart is destined to become a couple. In recent times, however, word has spread that no one has glimpsed the heart shape at all—a curious development that Sho and Rio refuse to leave unexplained. As the pair dig deeper into the legend, their enthusiasm proves contagious. The other members of the Biology Club likewise find themselves drawn to the school's assorted mysteries, and together they commit to unraveling each one through the disciplined lens of scientific method—proving that even questions of love and legend can be put to the test.