Yuusha Party wo Tsuihou Sareta Ore da ga, Ore kara Sudatte Kureta you de Ureshii. Nanode Daiseijo, Omae ni Otte Korarete wa Komaru no da ga?

Synopsis:

Despite playing a crucial supporting role, adventurer Mihama Ariake was expelled from the hero's party for being weak. Be that as it may, he was really compelled to be an explorer and was glad to be thrown out. After that, he saves a cute dragon girl from a wicked wizard, and it turns out that the hero's party's saintess is in love with him. Ariake currently continues to partake in his ideal adventuring existence with a party of charming young ladies.