A draw in the North-East derby will clinch it for Khalid Jamil's men, who have had a wonderful tournament and are likely to finish on 37 points.
But the triumph is not just about a football club but about the socio-political impact that it will have on Indian football. From being providers to clubs, the team from North East have now carved out a niche for themselves.
Since its inception as National Football League more than two decades ago, the blue riband tournament has been a bastion for the elite clubs of Indian football like Mohun Bagan, East Bengal, JCT (now defunct), Salgaocar, Dempo and Bengaluru FC.
From Sikkimese sniper Bhaichung Bhutia to artistic Manipuri medio like Rennedy Singh -- North-East's contribution to Indian football has been immense. Mizoram has been a minefield of talent.
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While someone like Pachau Lalampuiya went into oblivion, it is current goal-machine of Indian football Jeje Lalpheklhua, who has captured the imagination of Indian football lovers. Call it irony, Jeje played for Mohun Bagan, the side Aizawl is most likely to pip en rourte their title.
But as a team, lifting the silverware will be a tremendous boost for the wonderfully receptive and passionate people from the region, who love the beautiful game.
Jamil, meanwhile, accepted that there will be pressure on his side going into tomorrow's "make or break encounter" but the boys have to give their 100 per cent under any circumstances.
Preparation wise there is nothing much that Aizawl is going to do differently, said Jamil adding that Lajong were no pushovers at home and have displayed tremendous grit all along the season.
Replying to a question, Jamil said as a coach he cannot allow the stress of the epic encounter to get into him.
"The coach has to be under control," the former Mumbai FC coach said.
From the beginning of the season we have taken it one match at a time and tomorrow;s gonna be no different," Jamil said.
The news of around 2000 Aizawl fans travelling to Shillong for the NE derby has added extra spice to the tie and on Sunday all roads are certain to lead to the JN Stadium Shillong.
While it's a North-East derby but it seems Lajong's presence is just merely functional. But they can spoil the party something that Mohun Bagan fans will be eagerly waiting.
Ahead of the action on Sunday, Lajong coach Thangboi Singto calmed the nerves stating that though getting three points was all-important for SLFC, the game of football should be the ultimate winner at the end of the day.
For Singto, who aimed for a number 4 finish at the beginning of the season, things have been "positively challenging".