Story
Yutako Yamazaki is a dull, ordinary office lady. But her peaceful life changes drastically when Yukiharu Okudera, a member of Okudera-gumi gang, fell in love with her at first sight after he helped to pick up her glasses...! He proposes marriage to her right away . Of course, she refused on the spot, but his earnestness got the better of her and they exchanged contact information. From that day on, Yukiharu kept going after Yukiharu. At first, all she felt was fear, but she began to enjoy spending time with him, so much so that her heart started to fall for him.
Synopsis via AniList (English).