I Have Seven Irritable Senior Sisters

No time travel, no system, no golden fingers, no harem... There is no old man in the ring, and there is no reincarnated power in the body... Not a mortal, not a waste, not a rare physique... I'm just an ordinary, normal person with flesh and blood... In troubled times, I just want to be alone and be at ease... Apart from being good-looking, I only have seven irritable senior sisters... How grumpy? I don't dare to say anything for fear of being beaten, I'll see for myself... How good-looking is he? The cover is me, so-so... A senior sister is a senior sister, there is no other relationship... Although I am mediocre, I am at the top of the world... I don't know why, it just feels so weird... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.