The next morning Akeno had packed her stuff and ready to leave. Yesterday she had already informed Sparda that she would be leaving to train with Rias. Sparda kissed her and asked her to stay safe and take care. After that, she made a magic circle and teleported to Rias. After that Sparda, Tia, and Sona got ready to go to school. They all went to school.
During lunch break, Sona decided to talk with her sister about Amy also wanting to see the rating game. Sona made a magic circle and called her sister.
Sera: So-tan did you miss me? I missed you so much.
Sona: I called you regarding an important matter.
Sera: Tell me So-tan what your big sister can do for you.
Sona: Lady Amaterasu heard about the rating game and she became interested. She wants to see it too.
Sera: I will talk with Sirzechs-chan then I will let you know.
Sona: Ok onee-sama.
Sona disconnected the call and Sera and went to meet Sirzechs in office.
Sera: Sirzechs-chan Lady Amaterasu heard about the rating game and became interested she wants to watch the match.
Sirzechs: You are in the management of foreign affairs, so it is up to you. But if you decide to let her come ask her to bring guards because a goddess in the underworld will make a lot of devils unhappy.
Sera: I think Sparda will be accompanying her, so there is no need for guards.
Sirzechs: That makes sense she is his fiancée, and no one would dare to hurt her if Sparda is around.
Sera: So I will personally invite Lady Amaterasu tomorrow.
The next day Sera herself came to Sparda's house to invite Amy to the rating game. She stayed with them for dinner. Sona's birthday was in 4 days, Sparda told Sera that they would be keeping a surprise party for Sona. Sparda gave Sera to keep Sona busy on that day so she won't be getting any idea of what they were doing.
4 days passed in a blink off an eye it was Sona's birthday today. Sera made Sona to drop school that day and took her to shopping so that she won't be getting any ideas. Sera brought a lot of things for Sona. It was almost evening when Sera got a call from Sparda saying that they were ready. After that Sera brought Sona back home, Sona started suspecting them long ago that they were planning something. Sona opened the door with her key and entered the house and found that the house was completely dark.
Suddenly all the lights turned on and party poppers went off.
Everyone: Happy Birthday Sona.
Sparda invited Sona's parents, her full peerage, Akeno, Shirone, and Rias. Rias wasn't in Sparda's favorable people list but he still invited her thinking that Sona would like Rias being present there. They were still friends and Sparda didn't want them to separate them just because he didn't like Rias. Sona was really happy that everyone prepared all this for her.
After calming down she cut the cake and everyone started congratulating her. After that everyone started giving her gifts. When Sparda's time came he gave her a devil sword which would increase the wielder's speed and strength. Seeing that Sona was really happy. It had another hidden function which Sparda didn't tell her, it would notify Sparda of Sona's location whenever she is in danger. Sparda didn't want her to walk into any dangerous situations knowingly thinking that Sparda will come if there is some danger.
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A/N: Ok guys I didn't want to go in detail of what everyone gifted Sona, except what Sparda gave her. To me only that was important.
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After everyone was done giving Sona her gifts it was time to eat. Since today was a special occasion Sparda made all the food himself. Everyone was delighted by the food Sparda has made. It was the best food they have ever eaten. After that party was over and everyone started to leave, Sona thanked everyone that they did this for her. The Maids were cleaning the plates and house so Sparda decided to take a bath and then go to his room.
Sparda was laid on his bed only wearing his boxers waiting for Amy and Tia to join him. Someone knocked on his door and entered his room. It was Sona she was wearing a bathrobe Sparda got confused seeing her dressed like that.
Sparda: What are you doing here?? Where are Amy and Tia??
Sona: T—They won't be joining you today, for tonight I have you for myself completely.
After saying that Sona opened the bathrobe and she was wearing sexy black lingerie. Sparda gulped hard seeing her. He didn't expect Sona to surprise him like that.
Sona: I—I ha—have waited long for this. Make me yours.
Sparda didn't say anything and made a space barrier around the room so that no one could hear from outside. Soon sounds of love and pleasure filled the room.
The next morning Sparda woke up and found Sona sleeping over his chest. After some time she also woke up and Sparda kissed her. They went to take a bath, they had a little fun in the bath too. After the long bath, both of them came downstairs and found Amy and Tia mischievously looking at them. Sona was really embarrassed her cheeks were completely red. They took a seat to have breakfast.
Amy: So how was your first night Sona??
Sona: Please don't ask the details but it was really nice.
Tia: Well Sparda is good in that department.
Sparda: Please keep the bedroom's talk in the bedroom.
Amy: You are also embarrassed hearing that that is so cute.
Sparda: Please let me eat my food peacefully.
They had their breakfast with these small teasing here and there. The Maids had red cheeks hearing them. The rest of the day passed quite peacefully for them, all of them just lazed around except Sona. Sona was freaking out with all her pending paperwork, so she decided to complete those. At night when Sparda went to sleep, he found one person on his bed. It was Sona, she also decided that she would sleep with him.