I Leveled up from Being a Parasite, But I May Have Grown Too Much - Chapter 17 - Ally = Duo

Yang Yi was orphaned as a child. Foul play was ruled out by the authorities, but Yang Yi always suspected otherwise. Finally, once he was older, he met one of his father’s old friends who revealed the truth about his parents’ deaths. His father was an intelligence broker and had stumbled upon a mysterious, powerful independent spy organization. Both his parents’ were murdered to ensure the organization remained a secret.

Since he was unable to forget why they died, due to his eidetic memory, the only way he could be at ease was to seek revenge. In order to fight against the mysterious organization, he would first have to train in the art of espionage. However, not even one of the national spy agencies was willing to accept Yang Yi into their ranks due to his father’s sensitive identity.

Left to forge his own path into the field, he seeks out his father’s old allies for help. He learns how to be a spy in unexpected places while gathering the resources and allies necessary to form his own private spy organization.

Follow Yang Yi in his quest for vengeance! Follow Yang Yi as he prepares for A War Between Spies!

- Description from Novelupdates

A broken man who ended his own life finds himself reincarnated into the game he used to play. However, instead of becoming the protagonist or a powerful antagonist, fate places him in the role of a minor villain—a mere stepping stone for the protagonist in the game's first arc.

His fiancée, whom he had never met, had just broken off their engagement. He's then betrayed by his girlfriend and schemed against by her lover.His mother's legacy awakens him. No longer content with mediocrity, he transforms into a dragon overnight.

“From today onwards you are no longer my son. Get out” Being born into a noble family that is aiming to become the ‘strongest’, at his aptitude ceremony held on his 12th birthday it was discovered that Igni could only use fireballs. Igni who can only use beginner level magic was kicked out of his house.

With no where to go and without much magical ability, Igni is scraping by through life. However, one day he has miraculous reunion. “What? Is that Igni there?” “Gr-grandpa!?” It was a reunion with his grandfather, the man who was once called the strongest [Kyokuten] but was banished from his noble family because of his excessive womanizing…! “Grandpa! You said strong men are popular, but I can’t be strong!!” “Igni, listen carefully. Strong men are popular but, hard-working men are even more popular!!” “Grandpa! I’ll try my best!!!” Igni whose parents who banished Igni from the house, didn’t yet know of his obsession with being popular under the guidance of the strongest [Kyokuten] magician…!

“Igni that magic!” “This? It’s a fireball” “With this you can aim for [Kyokuten]! Come back here!!” “Nobility isn’t popular” “What are you saying?” This is a story where a young magician becomes the strongest by honing his skills all in order to become popular.