[Service Heaven (Yosomono)] Mama Raikou Sex Education (Fate/Grand Order) [Coffedrug]

Minamoto no Raikou takes it upon herself to give her virgin Master a very personal sex education, and with his command spells spent, Gudao has nowhere to run from the towering Berserker's smothering maternal love. Rope-bound and purring 'ara ara' as she claims him as her toy, she pins him beneath her enormous breasts and rides him with such overwhelming intensity that the inexperienced young man can only beg her to stop while she insists nothing goes to waste. A sweat-drenched first lesson in exactly what happens when Chaldea's most devoted mama-servant decides her beloved Master belongs entirely to her.