Naisho No Stalker-San summary:

Kadoya is a resilient, hardworking, and gentle person, so he’s often pushed to do a lot of work.He has this certain “secret”.He is living strangely with someone he can't see.When he comes home completely exhausted, there’s a hot bath and meal prepared for him.And at night…—— “He” comes to his side and holds him.Kadoya feels so perfectly supported in everything, from housework to letting our sexual frustrations that it feels like he can’t live without “him” anymore...!