[Fujisawa Tatsurou] Kazuma Is Mom's Prince (Ore-tachi Ure ga Yoi1)

Kazuma is roused from sleep by his eager mother, who quickly takes control and forces an intense, taboo encounter that leaves him breathless and overwhelmed. She teases him with promises of continued passion until he finally yields, their bodies locked in a heated exchange that culminates in a climactic release. The story ends with a lingering promise that their secret tryst will persist until marriage.