OMG!! You know about Opanchu Usagi?!??! To be honest, I only found out about Opachu this year via someone i follow (yes, Umeko finding it via twitter is a real life experience). Thank you for noticing all the easter eggs! I love putting little references here and there from my previous games!
I hope you'll enjoy it just as much if not more the second time reading through it! A wonderful rest of the yuri year to you too!