Gen sighed as he entered he and Senku’s shared house. It had been almost a year since the combining of the Tsukasa empire and the Kingdom of science and now the residents had actual— albeit still a bit primitive— houses. They had rooms! What more could they want? There ware real western style beds too! No more sleeping on cold grounds or rough bedrolls! They could sleep in comfort.

Anyways enough about his beautiful new house— he walked in and listened to the surprising silence. Usually Senku would be up and tinkering but right now? It was damn near silent. He walked over to their room and smiled upon seeing Senku curled up and ‘asleep’. “Oh? Is my dear scientist actually resting? Shocking!” He said before coming close and crawling into the bed with him.

He pulled him closer and buried his face into Senku’s neck and.. oh.

It hit him.

Senku wasn’t asleep..

Senku was in heat.

The scent hit him in a sudden wave. As if Senku’s scent blockers had only just stopped working as he got close. He smelled like rich coffee and lab experiments.. sweet and somewhat salty. And oh so enticing. “So that’s why you were so quiet huh..? Is my little omega in heat? What a ame-shay..” He said softly, kissing his neck before pulling away. “I’m sorry.. how’re you feelin’? Need anything?” He asked, switching to caring lover mode.