Kagami yo Kagami, Doku Ringo wo Tabeta no wa Dare?

Former child actor turned struggling idol Eiri is on the verge of being fired from his agency when he’s handpicked by Shoui, a perfectionist photographer whose model is treated as nothing less—and nothing more—than his muse. As this generation’s muse, Eiri knows that Shoui will sleep with him if he asks, but that won’t melt the icy walls around the notoriously distant genius’s heart. Determined not to fall too deeply in love, Eiri suppresses his feelings for over a decade...until the day a new muse appears. Now Eiri must choose which fear he’s willing to face: potentially being rejected, or losing his only shot before he even has a chance. (Source: J-Novel Club)