Axel was exploring the island when he spotted a large museum. Wandering what kind of displays and relics they have he walks in. Once inside he sees a sleeping standing brown owl. Axel couldnt help ut chuckle at the sight. Hearing him laugh wakes up the owl. After waking up she greats axel and introduces herself as blathers. Axel asks what kind of displays they have. Sad she says they dont have any as they just started. Blathers asks him for donations to fill out the museum. Remembering all the things hes gathered from exploring he offers them to the museum. Blathers amazed by the amount and rarity of his finds thanks him profusly as now the museum is complete. When asked how she can repay him he asks for one night of passion. Embarresed at his request blathers cant help but blush and wonder if hes as good as everyone says. She agrees and they head to the back room. Inside they see celeste wearing just her bra and panties sitting on a chair masterbating. When she sees the she nearly jumps from her chair. Embaresed to walk in on her sister like that blathers was about to leave when celeste notices axel. She asks blathers what hes doing back here. Blushing blathers tells her celeste blushing as well asks if she could join. Not sure how to respond blathers looks to axel who tells her she can after blathers. Axel grabs blathers and pulls her in for a kiss. Suprised at first blather returns the kiss tongues wrestleing in each others mouth. After breaking the kiss axel asks her how she wants it. She points to the bed and they walkt towards it. Axel lifts up blathers shirt revealing her b cup breasts and pulls down her pants and underwear. Now fully naked she lies on the bed. Axel having stripped climbs on and opens blathers legs. Slowly he pushes his member in stopping when he reaches a blockage. He kisses blathers again and thrusts forth tearing her virginity her cry of pain muffled by his lips. Not wanting her sister to be in pain celeste rubs her hands on blathers breasts and stomach easing the pain. After the pain fades axel pulls out partway and thrusts back in creating a steady rythm. Happy to see sisters so close on this island axel speeds up his thrusts making blathers gasp when he hits her cervix. Feeling him so deep blathers Grabs his hips and pulls hhim in wanting him deeper. This pushes him past her cervix which sets her off. The added tightness sets him off as well Filling her womb with potent seed. His sperm swam around her womb looking for her egg. After searching a bit they found one and fertilized it impregnating her. Pulling out  of the exausted blathers axel sits next to her tired. Celeste wanting her turn removes her bra revealing her c cup breasts and panties now naked she stands over axel she loweres herself onto his member. After a few inches he reaches her hymen Bracing herself she drops down breaking it. Seeing her fight back tears axel kisses her and holds her close. Celeste gasps into his mouth when she feels blather rubbing her breasts. Whith the pain gone celeste gets up and drops back down repeatedly. Being close from masterbating earlier she cums quickly. Knowing her sister got knocked up celeste wantes to as well. Responding to her feelings her body responds by signaling her ovaries to release an egg making her ovulate. Feeling her cum and knowing she ouvulated axel slams her down piercingher cervix setting him off. Celeste coos softly livingthe warm feeling of his cum in her womb. His sperm quickly found her eggs and afer a few second dug inside fertilizing them celeste was now pregnant. Tired from the session the two drift to sleep. The last things they hear is axel welcoming them to his harem.