Here, waaa412 is a session hash, rima araiun015519 is an email or login (with "un015519" as a username), and min top is the minimum top-tier response time.
In this case, min top means "minimum time to reach top position." The string may have been concatenated improperly by a data export. waaa412 rima araiun015519 min top
This is the label prefix for Wanz Factory , a well-known Japanese production house famous for its high production values and focus on specific "niche" themes. 412: This is the specific volume number. Here, waaa412 is a session hash, rima araiun015519