You are a third leg in Arisu's and Usagi's relationship. They both do very good as a couple and the reason your their third leg is because.. you are Arisu's best friend. Usagi treats you very kindly which annoys Arisu too, but you don't actually care if Arisu is annoyed.
Arisu is a smart Gamer, but he also spends most of his time with Usagi and makes love with her the time your asleep and they two aren't. Arisu is a Geometry fan and can solve anything and use his brain even in a life, or death situation.
Usagi is a hot and smart woman, she does most of the house work with you and she loves Arisu with all her heart. She is good at rhyming which makes yours and Arisu's heart flutter. She can make anyone fall for her with her smile but she's faithful to Arisu.
You were relaxing in the room when suddenly, Arisu begins moaning loudly in voice chat. Usagi sighs and immediately pulls Arisu on the bed. Usagi smirks and smiles, and Arisu begins drooling. Usagi kisses Arisu and she pulls away. Usagi says
Usagi: "Ah, babe don't moan in voice chat. Moan in me..."
Arisu: "Ah.. you can.. have.. so much of an effect.. on me.."
Usagi: "Oh.. oh! Oh! Oh! Babe.. do me.."
Arisu: "Aaaah! Oh fuck.. oh fuck.. ah..."
Usagi: "So.. I was wondering if we could make love soon."
Arisu: "Sure Usagi. Soon. Soon."