Highschool dxd:The Hyoudou's Power

FLASHBACK

Flashback(when Issei saw Yukito;you know it)
(Partner, your rage is rising) Ddraig warned Issei
"HEH"
(What are you planning to do partner?) Ddraig asked.
"I am going home to Onee-sama" Issei replied with tears in his eyes. Because of his sadness.
"Issei!" "Ise!" Issei heard Koneko and Akeno rushing to him. And to his suprise, they hugged him with tears in their eyes. "Ise! We were so worried after you just ran away!" Akeno shouted worriedly.
"Yeah! We know that you felt sad and anger to 'them' after seeing 'that'. Please don't ran away again from us Issei" Koneko said.
"I'm sorry that I made you worry about me" Issei said
"Where are you going, Issei?" Koneko asked
"I'm going to our mansion here in Kuoh" Issei replied.
"I'm going to greet Onee-sama too. It's also her birthday today" Issei continued
"Yeah I remember that, too." Akeno said.
"We're going with you.'' Akeno said.
"Yeah, I want to see Zofia-nee again." Koneko said excitedly.
"Ok then. Let's Go!" Issei said.
But Issei still have tears in his eyes flowing down.
When they arrived in their mansion- Issei opened the door. And saw Zofia singing.
"Hey Onee-sama. Happy birthday." Zofia was surprised to see his one and only brother.

Zofia 's Pov
I am so happy to see my little brother again. But my face became sad when I saw his eyes a bit red and puffy (which I know he cried.)
"Happy birthday Zofia-nee/Zofia!" Shirone and Akeno greeted me.
"Good to see you again Shi- I mean Koneko and Akeno!" I am so glad to see them again.
"If you excuse me. Issei,come with me in your room." I said.
"Okay." He replied.
Were now in his King-sized bedroom.
"Okay, first Thank you for greeting me. It made me happy. Second: I need to ask you, why did you just cried?" I asked him.
"Heh, You're totally my sis. You totally know me." He replied.
"Ok. I'll tell you. Your ex boyfriend Yukito. He joined Rias' peerage as a rook 3 months ago. Today, Koneko and Akeno baked a 5ft tall cake for me. Its wide that's why we got an idea that we will invite the others which was Rias, Asia and Xenovia." He started to tear up. I hugged him.
He continued " I think I will also let Yukito join us for my birthday. But when I went to my room with Akeno and Koneko. We heard weird sounds. It was moaning. I saw Yukito fucking Rias,Asia, and Xenovia." He is already crying.
"Issei, you know why I broke up my relationship with Yukito 3 years ago?" He shook his head meaning that he don't know about it.
"I also saw him Fucking a girl which I don't even know." I confessed. His power is rising because of his rage.
"Calm down. You so overprotective." I said. "He also did that to you then. I will make him know who the boss is soon enough." Issei said. "That's the brother I know." I replied. "I will leave now and let you rest." I said. "Ok Onee-sama." He replied.
As I was about to leave:
"Happy birthday my dear brother. I love you." I said.

Thank you for reading this flashback. See you!