Only I Know the World Is Ending and Getting Killed by Rampaging Beasts Only Makes Me Stronger (Manga) Vol. 5

Akira and Nao are joined by a mysterious foreigner and a young girl in search of her father, the four of them working together to brave a city that's becoming less familiar by the second. However, no matter where Akira goes, a fearsome Dullahan is always waiting for him and his party. Will they be able to shake it off, or is yet another boss battle on their horizons?