Proposal for new burning mechanics

I would like to propose to add Fusion mechanics aside from evolution. Fusion can be done by combining 2 Karas that meets a condition (can be discuss further by DAO member) like it must be same type Karas or same class (N to N, R to R, etc). The benefits of this is to make a new kara that 1 skill choice of your own and the other 3 skill in random( can be change or discuss further). The purpose of this to help burning umy. Umy will be use for fusion mechanics.