A/N: So this is the beginning

Sebastian Pov
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Who could of thought that Mei-Rin would be my mate? She had been right under my nose the whole time her talents as a femme fatale were what drew me to bring her to serve the young master. Mei-Rin only acts as a bumbling maid to protect the young master and the Phantomhive estate. At first I was cruel and indifferent to her as I suppressed my urge to mate with her right away. I managed to let out my frustrations through lust to acquire information for the master.

My one solace was when I would tend to my wardrobe of cats and kittens, after spending another hour giving lectures to Bard and Finny I was looking to look in on Mei-Rin. I felt giddy watching as Mei-Rin calms a small white with kitten with silver eyes that was injured. I had cleared my throat making her jump when she began to make the kitten purr while tending to his wounds.

"Mr. Sebastian, I ...I was doing my chores I was, I went to bring in the sheets and heard this little one cry from under a broken flower pot."Mei-Rin whispers as I chuckle and realized Finny must accidentally injured the little jelly bean when unloading the new flowers. I reassured Mei-Rin that she was not in trouble, as shared that I share a mutual affection to felines. I was delighted to show her my other cats and once when we were in my bed chambers was only when I reveal my attraction towards her.

I grined broadly when she confessed her feelings for me and to my utter shock Mei-Rin already had suspected for a while I was a demon. I took her onto my bed and unleashed all of my pent up arousal as I marked her as mine. I explained to her that through our bond as mates how we could share about what our pasts had been.

I knew when she saw the nun incident that she was fully aware what one must do to protect the young master. For the past few weeks the young master saw how I was affectionate and possessive with Mei-Rin, I suspected he has a clue about how male demons were when their mates. I was more so as after our third session of shagging today I knew Mei-Rin was with child. I held my mate tightly and explained how as she's only a half demon. Mei-Rin as my mate while carrying our child she will become rather possessive of all she cared for.

I laugh as she admitted she cares of the young master as a nephew, Tanaka like a second father whilst Bard, and Finny are her adopted brothers. She added that Madam Red is a sisterly figure and Lady Elizabeth like her niece. We were snuggled closely before the young master was calling for me to attend to his needs I let out an audible growl as I quickly dressed and share a chaste kiss with my beloved as I rushed and attend the needs of the young master. I knew he was expecting Lady Elizabeth, and Madam Red to visit today. I was aware that the young master also concealed feelings that he had for Lady Elizabeth, and perhaps was considering altering our faustian contract. I allowed my mate to tend to her own needs while I head to see the young master in his study aware we had a case to continue instigating.

"Sebastian, it's about bloody time you came seeing as we need to narrow down suspects. I am aware you and Mei-Rin are mates and all but I expect you to both continue your duties. "the young master adds" I only know that Elizabeth suspected you both are a couple" the brat shouts while rolling his eyes. I notice his shouting caught the attention of Mei-Rin who glares when the young master claimed that I was not going to be loyal to Mei-Rin seeing as I was a womanizer and used seduction and sex to obtain information in the past. Mei-Rin soon was soon face to face with the young master before she kurtly
explained how she suspected my true demonic nature and of the contract we had for a long while. I was delighted when the brat shut up after noticing Mei-Rin shows her bonding mark as my mate.

I grin when the brat now understood that Mei-Rin my mate and went into graphic detail of when a demon finds their mate what goes on during our mating ritual. I saw the young master's stoic mask fall from my explanation of what the ritual entailed. I bluntly stated that meant Mei-Rin was with child. I smirk as Mei-Rin goes to tend to her duties while I inform the young lord that it appears that the three possible leads were Madam Red, Lord Druitt and someone not entirely human. It was around this time that Tanaka informed us that Lady Elizabeth, and Madam Red had arrived as expected.

After greeting our guests it was soon after that I overheard the young master informed our guests of my relationship with Mei-Rin. I bit my lip as I noticed that Madam Red and Lady Elizabeth both seemed pleased. I sense that Madam Red was focused on her butler and it was suspect as I felt a familiar aura coming from the man. I was brought out of my thoughts when I noticed my beloved mate soon passed out, I carried Mei-Rin back to our bed chambers. Most female demons who fell pregnant often would black out during the first month from their hormone and emotional changes. I am thankful the young lord and his guests were in the library seeing as I was concerned for my mate. I returned to tend to our guests and soon realized that my suspicion of Madam Red and her butler were correct, the sense of sex lingers on the two and shuddered when the thoughts of what that was like went through my mind. I can't help but notice Sutcliff had been preoccupied with something and a casual glance in my direction .

I had to admit for a while that I had suspected he romantically cared myself and Madam Red. I shook my head as I noticed the door bell chimes. Tanaka approaches holding a white wicker basket with a note about how the nun Matlida Simmons had died in childbirth giving birth to a son that I sired. I soon felt when Mei-Rin's presence approach as I look over my little boy. I think that I'm about to be beaten senseless by my mate presently. I am however stunned when Mei-Rin studied the boy before letting out a squealing noise. I smirk seeing how my son continued to sleep soundly. I'm grateful that the young master, Lady Elizabeth and Madam Red are having tea in the garden.

"Sebastian, he is so cute yes he is. I'm curious about how come he has come here just now." Mei-Rin asks as her eyes flash deep crimson after reading the note she sheds a tear adding "I will accept him as if he was my own I will. Does he have a name?"Mei-Rin while I look at the note in the basket which my son arrived in. I frown seeing he hadn't been given a name at all. I gave my mate a look of confusion before I informed her our eldest child had not been given a name. Mei-Rin as she nods before taking the boy from me.

"I think the name Atticus is good for his middle, I think he would like that name I do."Mei-Rin says as I took a bottle from the basket and hand it to Mei-Rin so she can feed our new child. I gently kissed both upon the brow as I softly chuckled watching as the pair bonded with each other. I am pleased to know my mate is prepared for taking in my son as if he was her own. I think it's possible that she will be the best thing to happen since I discovered cats.

"Ah my beloved Mei-Rin I think it's such a delightful name for our boy. I choose Corvus as his first name, as he seems like one. So our boy shall be named Corvus Atticus Michaelis." I flashed my signature grin before gently carrying my pregnant mate and first born back to our chambers before I tend to the young master and make certain Finny was tending to the garden and Pluto. I see to it that Bard doesn't wreck the kitchen, and Tanaka just does what he's doing normally.

I would likely have to explain that my affair with the nun Mathilda Simmons resulted in Corvus and I have a feeling that my life was about to become more interesting. I also would explain to the young master what I sensed and knew about Sutcliff and his beloved Aunt Madam Red. I sigh as I make certain that everything I noticed as of late would pertain towards assuring my master would solve the case he was investing.