Yes, they're a partner developer team and invited us to their game store, which specializes in the adult games niche.
We recommend the OppaiMan store to all players who want to discover good adult games.
However, if you prefer to buy our game elsewhere, you can buy it on Steam or get access to it by pledging at least $6 on our Patreon page.
You can buy it wherever you want, we just provide several options to our players.
Thanks for playing!