Natsu's torture

3 or shall I say 4 people of team natsu go a (three person job) and at the end of the job some one know's natsu only natsu doesn't know the man anyway natsu has some one stalking him and Lucy has a eary feeling .A night later after the job natsu gets kidnapped and tortured a day after the captors go back to the guild and tell them why they have to punish natsu 1 month has past and mira,laxus,Carla ,wendy, happy,Lucy,grey, erza,gajeel,levy and pantherlilly go to rescue natsu and when they end up captured and left for dead 💀 but they get water and bread and natsu becomes a slave and has a color and then 3 years later they all escapes and defeat the captors but natsu goes slowly and Natsu won't let anyone touch him and he won't let anyone to touch his color he ends up hurting himself

Why do the captors have to punish natsu ???
Who are the captors ???
Warning ⚠️ torture and gore😉 and rape!