EGUCHI Mayumi

Matsuko is a 32-year-old office worker who loves sake and drinks it at home every day. She has been living without a man for three years. She enjoys being alone, but she also wants to be in love. But she's attracted to a cool younger guy at work, and when the two of them drink together, he turns out to be the cutest "drunk dere" ever...? A love story about a sake-loving office worker and a cool younger guy who gets her drunk with style! source: https://www.mangaupdates.com/series/jwwq50x/sake-to-koi-ni-wa-yotte-sarubeki