When Kirito finally made his decision to search for Yui's parents Mint messaged him, it told Kirito that he found a little girl that has white hair and if Kirito knew something about her, Kirito quickly wrote "A little girl? We found one too at the forest yesterday, she lost her memories so we planned to take her to the beginner town to search for her parents" Mint replied "Wait for a second... So we both found a kid probably around the same day... Let's just meet up at the started town teleporter..." Mint just replied "Yep"...
When Mint arrived at the town Teleport Gate half an hour earlier so he opened a demonic door to a luxurious inn to wait inside...
After Kirito and Asuna felt nostalgic about being in the beginner town they spotted the demonic door, Kirito was curious but he guessed it's Mint's door so he knocked on it, after he knocked the door opened revealing Mint and Shiro playing chess, right as Kirito opened his mouth to say hi Mint won the game earning a cute pout from Shiro while she said "You must be cheating or something" Mint replied arrogantly "I am the best at games so of course, you would think that, but don't worry as I'll teach you all the tricks and we will work together to create a stronger team than ever!" Mint patted her head at the second sentence, Kirito then waved his hand awkwardly and said "Hey, Mint... The door was open..." Mint nodded and said, "So I am Mint, the Fiend God, this is Shiro she calls me big brother so get used to that. this is Kirito, my little brother. this is Asuna his wife and..." he gestures to Kirito that finishes the sentence "This is Yui she calls us dad and mom so you too get used to that", Shiro greets them monotonously and then goes to hug Mint's arm, Mint then says "Alrighty let's start the investigation!"
Mint went around town while piggybacking Shiro with the gang, Mint, and Shiro mostly zoned out as they walked until they heard someone shout "Return the children!", Shiro pointed into the direction and told Mint "Be the hero!" Mint just nodded and sprinted towards the sound while he was about twice as fast as both Kirito and Asuna.
Mint suddenly appeared near the kids, as if he teleported there, Shiro then said "It looks like they are gangsters..." surprising everyone at the newcomer, the soldiers of 'The Army' then roared "Who the hell dares say that?! Are you going to obstruct us from doing our respectful duties?!" as the man shouted he took out his sword to make himself more intimidating, and it worked on the kids but Shiro just said monotonously "Annoying... Brother, can you crush him please?" Mint smiled and said, "Sure just let me summon the right fiend for these weaklings!", Mint then waved his hand and 3 Chain Devils that were each made out of 5 [he could summon 30 chain devils at his level], each of these devils used a skill on all the soldiers [6 of them] called
At the orphanage when asked about Shiro Baal told her that she too was found in the forest but at a different location on the same day without her memories.
They now entered the dungeon as Baal said he wants to come with them on their quest to save Thinker... After Kirito slew the scavage toads he first approached Asuna to cook the frog meat but when she denied him he looked at Baal, Baal said "Mint does have plenty of recipes that can use the Toad Meat" Kirito nodded and smiled while giving a thumbs up...
When the Fatal scythe appeared Baal prepared to fight with his all after he sent Shiro to be with Yui and after equipped his bone armor, he summoned Mint's personal mount Antoran the nightmare with wings, after Asuna and Kirito tried to block Baal went at full speed while activating a skill "
Baal watched as Shiro silently followed Yui and activated her item eraser making a firey sword appear in her hand, as Fatal Scythe blocked Yui sword Shiro slashed him from below erasing it... While Yui had her confession openly with Asuna and Kirito Shiro layed on Baal's healed chest as she silently cried while saying "My story is the same as hers but I'm the second prototype" Baal hugged her tightly only comforting her and Shiro hugged Baal back tighter as Yui got asked "What do you wish for?" by Kirito, as Yui said they two will be deleted by cardinal Baal shouted "I'll prevent it by any means! I was instructed by Mint to protect you all!"... As they both disappeared Baal ran to the GM console and punched it, unexpectedly it went through the console while Baal screamed as his skin seemingly molted, after 22 seconds Baal got blown away while he started laughing, after he used a healing crystal he said "I succeded saving them!" as he gave Kirito an item, a frozen crystal looking like a tear called 'Yui's Heart while he kept a similar object in his hands tightly hugging it...
While this all happened Mint watched all this on a screen inside the cage while using Tower Shields to deflect all the attacks coming at him. while smiling he said, "Time to finish this... Baal gained sentience so that's nice"