I Got Caught Up In a Hero Summons, but the Other World was at Peace Vol 2

From the Seven Seas Entertainment edition

HAREM HIJINKS Miyama Kaito has quickly adjusted to living in another world and has even managed to score himself a first in both dimensions: A date! Chro, King Hades herself, asked him out to spend time together, just the two of them. Unfortunately, their traditional date activities are interrupted when a group of rogue wyverns terrorizes the market! Their day ends on a high note in spite of the disruption, but it leaves Kaito examining his feelings for Chro and the new world around him.

Source: Penguin Random House API