Kachou, Kekkon shimashou!!

Synopsis

Aoki, who lives with his only daughter after his wife died, has a special hobby of making sweets! One day while handing out his baked goods at work, Mizuno, an unfriendly subordinate, unexpectedly enjoyed the desserts. As a result, Aoki invited Mizuno to his house to deepen his friendship, but as soon as Aoki gave Mizuno a colorful handmade sweet, he proposed saying, "Chief, please marry me!" (Source: Tokuma Shoten, translated)