How do the ranks work?

R5 - Leader:
Can manage the members (promote/demote/kick), change the description and requirements for the guild and start the Star Fever Event.
R4 - Captain:
Can manage R3, R2 and R1 members, change the description and requirements for the guild and start the Star Fever Event.

Note: if the leader has been offline for more than 4 days, a takeover will take place.

Takeover times: 4 days for an R4, 5d for an R3, 6d for R2 and 7d for R1. 
If two or more players share the same rank, the highest power will receive the leadership.