This role involves comprehensive specification planning for online games, including function revisions, level design (parameter settings, etc.), event/campaign/gacha data creation, and schedule management. Responsibilities include planning and specifying the operation of online games, and possessing basic knowledge of KPIs. Desirable skills include schedule management experience, experience in negotiations with external development teams and project progress management, UI/flow design experience (existing modification/existing function addition), basic design experience of backend tools (KPI screen and GM tool), and level design experience (character parameter settings, etc.).