Drama na Koi wa Kihon kara

Yuuki Shinji is an ordinary businessman, 35 years old, single, no girlfriend, living at home. He is worried about his future as a single man, but he has little experience in love and is afraid of marriage activity. But when he meets a female doctor, he falls in "love beyond his imagination," a love that turns his life upside down!

(Source: Kodansha, translated)