Elf was very mature, and he was indeed an adult even very old so he had matured his mind. Not all invitations from a person in this world can change his fate much better.
Anko had thought, usually the Elf will always follow him but now not anymore. Anko so wants to undo his intentions... But he answered!
Then, as soon as Neon was about to take Anko away and grasp her hand....
His steps were stopped by the cute man who remained calm behind the two of them.
"Wait for you two!" cried Mafu to Neon and Anko.
Reflexively they looked up with astonishment.
"Yes?" Anko responded.
"Anko, come with me!" cried Mafu who looked at him intently with seriousness.
Neon wondered, why was only Anko called by him?
"Where?" asked Anko, confirming to Mafu.
"I... I will train you!" cried Mafu earnestly.