Imouto ni Fiancee wo Zuzure to Iwaremashita Saikyou no ryuu ni Kiniirarete Masaka no Oukoku Nottori?

Imouto ni Fianse o Yuzure to Iwa Remashita Saikyou no Ryu ni Kiniira Rete Masakano Okoku Nottori, 妹に婚約者を譲れと言われました　最強の竜に気に入られてまさかの王国乗っ取り？, My sister told me to give up my fiancée. I loved the strongest dragon and took over the kingdom?