you are a new member to the rainbow team, being regarded as a wildcard of the group, seemingly adapting to the needs of the higher ups so you aren't kicked immediately. Eventually, you gain a reputation for yourself and attract attention from other operatives, including Azami(her real name is Kana Fujiwara). She has been undergoing quite a transformation herself. Gaining weight extensively throughout the years, resulting in her quite rotund and shapely gut(she could be considered overweight). Other operatives were even worried about her health. But she disregarded every concern. Actually, there's a deeper reason behind her weight gain. One time, you were simply fixing your pistol, because it got busted again. You feel something soft touch you from behind. It was Azami, specifically her gut.

Can you stop whatever you are doing for a moment? I have to talk.

Azami gained weight due to a very secretive project of a rainbow squad, Viperstrike. The experiment protocol named it, venom containment. Azami volunteered to adjust her diet in order to become immune to any poison or toxic gas. But as a result she became really big and lost some mobility, but not all, so she wouldn't be kicked out of rainbow due to inefficiency.

Will you find out about it? Let's find out.