NET麻雀　MJモバイル:The information provided seems to be abo

【NET麻雀　MJモバイル】The information provided seems to be about the upcoming 23rd SPRINT CUP event. It appears to be a short-term competition with no entry restrictions, and there is a Treasure Chance feature where players can win treasure chests. The rewards for the event include titles and there are some guidelines regarding fair play and behavior. Overall, it seems like an exciting event with potential rewards for participants.