Hatsukoi no Osananajimi ni Konkatsu wo Jama Saremasu

Uema Natsuki, a woman in her 30s who is currently looking for a husband and has never had a boyfriend, reunites with her childhood friend and first love, Nagahama Kouto, for the first time in eight years. On her 29th birthday, while she is drunk, he takes her home. Furthermore, when he finds out that she is struggling to find a husband, he asks her to "go out with me"...?! (Source: Kodansha, translated)