災害で卵を失ったドラゴンが何故か俺を育てはじめた = The dragon who lost the egg in the disaster started raising me for some reason
さいがい で たまご お うしなった どらごん が なぜか おれ お そだてはじめた
est. Rough estimate based on volume count, reprints and magazine — not an official figure
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections