Isn't It Reasonable for My Yandere Empress Sister to Slay Gods?

"Summoner + Buff Monster + Comedy + Lighthearted + Living off Others While Keeping Your Pride + Irreverent + No System + Another World Descends + Sensible Plot + No Toxic Content from Start to Finish = Safe to Enjoy!" I have a little sister who can move mountains, overturn seas, subdue demons, exterminate monsters, slay gods, pluck stars, split rivers, destroy cities, and cleave open the heavens! My name is Ye You. I'm just an ordinary sunny boy of the new century who studies hard, strives to improve every day, and loves helping people! When I was sixteen, on Blue Star, where another world had descended three hundred years earlier, the era of class changes had arrived for everyone. I awakened as a Summoner, but my pet turned out to be a strand of Bluesilver Grass... This novel is also known as My Buffs Are Just a Little Bit Too Strong!, My Pet Is Just a Little Bit Too Strong!, I'm Really Not a Siscon!, and Little Sister, No!