Patora Fuyuhara 
In Another World With My Smartphone: Volume 28 [EPUB ebook] 

When Touya’s wives find themselves in a spot of trouble, their kids take center stage! While Touya is enjoying a relaxing vacation at the beach, the wicked devout make their move, secret weapon in tow. To make matters worse, there are mutterings that an old enemy has reappeared! With Touya still struggling to forge his sacred treasure, is there any hope of victory? Unable to wield the weapon himself, who could even take on such an important role in his stead? And can they find a counter to the wicked devout’s weapon? Danger fast approaches in this tale of swords, sorcery, and shocking discoveries!