Wagamama de Samishigariya na Futanari no Osananajimi ga Yokkyuu Fuman ni Natta node Kaishou shite... わがままで淋しがりやなふたなりの幼馴染が欲求不満になったので解消して上げる話, The Story of a Selfish, Lonely and Frustrated Futanari’s Childhood Friend Whose Pent-up Frustration is Relieved