Azu, who couldn't even meet her sex friend and was bored with her libido and free time. While taking a walk in the park on a whim, she picks up a participation ticket for a suspicious "old man gacha". She went to the venue with half belief and half doubt, but after she had completely forgotten about it... what arrived at her place was an unusually large and heavy package. What appeared from the cardboard box that was rattling and moving was, surprisingly, the prize 'M old man'! The content may vary depending on the distribution method.