Deisui Kanojo

On Christmas Eve, Seto Hozumi is forced by his older sister to take care of Izumi Nanse, a beautiful girl any man would love to be with. However, she stands out not only for her beauty, but also for being carefree, useless and someone who is very fond of alcohol. Now our protagonist will have to deal with unexpected visits from this beauty who does nothing but drink… ᵃⁿᵈ ᵃˡˡ ᵗʰᵃᵗ ᵉⁿᵗᵃⁱˡˢ﹗