Atsumori-kun's Bride-to-Be Vol. 6 (Kodansha, 2021)

Nishiki arranges to meet with Atsumori's father, but her grandfather collapses on the same day, and she's forced to suddenly cancel. Her grandfather is admitted into the hospital owned by Atsumori's family, and when she runs into his father there, he gives her the cold shoulder. Despite her setbacks, Nishiki resolves to get into medical school with Atsumori, and devotes herself to studying for the entrance exams. Meanwhile, Atsumori's brother Yukishika has declared that he'll be the one to take over the family business. Atsumori finds himself feeling deeply conflicted, and runs away on an elopement trip with Nishiki! As Atsumori realizes the depth of his feelings, he officially asks Nishiki to marry him…?! Nishiki and Atsumori's awkward love finally reaches its resolution!