Irozuku Monochrome

A man named Isshiki develops feelings for a pure and innocent girl, but he is tormented by Asmodeus, a demon that incites lust. To rid himself of the demon and remain undetected, Isshiki must suppress his desires despite the provocative actions of those around him. The demon attempts to manipulate the women close to him to trigger his reactions, creating a struggle between temptation and restraint. This dynamic forms the basis of a romantic comedy centered on Isshiki's internal conflict and efforts to maintain control.