Crowdfunding; issuance of stored value cards; issuance of membership credit card; financial services for the management of prepaid credit cards with membership card function; issuance of prepaid card with membership card function; issuance of discount coupons in the nature of tokens of value; issuance of mobile discount coupon in the nature of tokens of value; issuance of electronic coupons in the nature of tokens of value via smart phones; issuance of gift certificates; issuance of electronic gift certificates which may then be redeemed for goods or services; extended warranty insurance services; financial management; rental of real estate; rental of real estate using virtual reality (metaverse); real estate management services relating to entertainment venues; credit bureau services; financial customs brokerage services; art appraisal; jewelry appraisal; organization of monetary collections; all aforementioned services being exclusively related to K-POP or K-contents conventions and events