I’m looking for a (colored) manga illustration about “anomalies” and the government ...

I’m looking for a (colored) manga illustration about “anomalies” and the government has “squads” to fight it. All I remember, the bottom has black hair, skinny, smart, and the top is blonde, cold, and “leader of the group” (lieutenant or something). The top’s group noticed how the bottom is gifted, so they let him tag along and use his abilities. I also remember there was a flirty guy with long pink/red hair and a girl (Lily??? same age and “class/level” as bottom) and she cried in the corner when the “anomalies” or zombies came rushing instead of fucking running away. Hopefully these descriptions are decent enough! Please help!!! Thank you.