The Dual Identity of the Passerby Male Protagonist

When An Yilun woke up as a time traveler, he found a beautiful woman lying beside the bed, and this beautiful woman turned out to be his own clone? Facing the infinite two-dimensional world, Kasumigaoka Shiyu and the idol masters questioned, where will An Yilun go, or will he start a big harem? This book is also called His and Her Two-dimensional Fantasy. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.