Do I Really Have to Be the Undercover Agent? I’m the Sporty One

Volleyball player Kaguya Yoji is saved from an accident by a system called [Undercover 007]. It claims that if he completes the undercover missions it assigns, he can have a new life.

System: From now on, you are a professional volleyball player caught up in a murder case.

Kaguya Yoji: Mm-hmm.

System: Complete an arms deal without alerting anyone.

Kaguya Yoji: M-Me?

System: And personally cook a delicious feast for your boyfriend.

Kaguya Yoji: ... B'er, where am I supposed to get a boyfriend?

The fake boyfriend's perspective

After his identity was exposed, Hiromitsu Morofushi was given a dose of an aphrodisiac by an assassin sent by the Organization. To his surprise, after a bout of excruciating pain, he didn't die. Instead, he turned into a middle schooler!

As he wondered how to keep his identity hidden, a man suddenly appeared, repeatedly calling him his "boyfriend" and taking him home.

A human trafficker? Some kind of special fetish? Though his body had shrunk, Officer Morofushi's sense of justice was still top-notch. He decided to use the man's apartment as a hideout for now and look for a chance to have him arrested.

#Hiro as the pairing. He's a middle schooler at first, but later returns to adulthood.

Mainly Detective Conan, with some adult Haikyuu!! scenes mixed in~

Theme: What's this? A combo meal? Let's have a bite!