That was my first thought, but it doesn't make any sense here. Plus, when I tried to Google it, I came up with a bunch of corporate management sites... which didn't really help.
It says エコロジー (ecology). One commenter on pixiv suggested a connection between ecology and Subterranean Animism but the artist's comments aren't too specific. I'd either leave it untranslated or put in something like "Think Green!".
The tag has been made. Suwako is now the legal...goddess.
Win the championship......win believers!*Clap*!What? You want to sub for me in the tournament?I won't ask what you meant by that.I'm leaving it all up to you!!The championship is ours!!Throwing Her Hat Into the RingYou wouldn't be a handicap, Kanako...I guess I don't mind, but... why me?Win the championship......win faith!!I mean, if you're aiming for the championship, wouldn't it make more sense for the two of us to go in together?...win lots of believers!'Handicap'... huh...Thanks, Kanako!!Episode 37: Sanae's Fighting SpiritFrom the Artist's Pixiv page*Smash*!Even Sanae might be too strong.Eulogy...