One day, Shuna and Shion were squabbling over Rimuru's soft slime body as usual. Rimuru decided that giving each of them a duplicate of himself might settle the dispute, but when he imagined other friends asking for the same treatment, he quickly shelved that idea. Instead he chose to craft a cushion molded after his own slime shape. He wandered through the winding alleys of Tempest, consulting friends at market stalls and an old shrine for suitable materials. He learned that a rare type of sand from the forest lake shore was exactly what he needed, so he packed a small bag to sift it. Determined, he set out toward the lake, but a monster waited by the water's edge! Meanwhile, Milim caught wind of his picnic plan and swooped down from the sky to join them!