It stayed

Hiro put his hand forward without any thoughts to summon the 'water ball' spell. He chants "water ball" and suddenly he could feel his mana gathering to the palm of his hand for the first time in this life.

Hiro was shocked but he could feel his heart giggling from the excitement of the chance of him becoming a superhero in his current world with a smug on his face.

The spell that he chants created the water from the mana that he have and it shoots out the water ball that he summon to the door, only to be unseen from the explosion that he created with his spell.

Hiro was anxious from the explosion that he created and wondering if his parents noticed the explosion. Hiro's face was absolutely terrified from his imagination if his doting parents saw the explosion but his anxiousness was relief when he remembered his parents was not at home.

He thought to himself "thank god they're not at home but they would've been worry about me rather than the door".

Although Hiro was mentally an old man, he was glad he has a doting parents and they would have been worry sick if anything would've happen to him and he knows it.

As a sage, Hiro immediately tried to hide the proof of the explosion by reverting back of what was damaged with his spells to hide the fact that he has powers.

"It seems that this world also has mana in the air but I wonder if there are any differences between the mana in the air of this world compare to the world in my previous life" Hiro thought to himself.

Hiro then sit with hig legs cross to meditate and feel the mana in the air to discover the fact that this world has an abundance of mana in the air just like the world he transport to in his previous life.

Hiro never would never have thought that the world he currently reside in has mana in the air because the people in the world Hiro has seen have not use magic and spells.

"It seems that this world seems to lack the knowledge of utilising the mana in the air nor do natural occurrence happen that involve mana happen in this world would be the cause of their ignorance towards the mana in the air." is what Hiro thought to himself.

Although this world has an abundance of mana, nobody could use the spells and magic as he observe before when he was with his parents in public.

Hiro's discovery did not end there. As a sage in his previous life, Hiro had a mana heart that could channel almost an unlimited mana but due to the use of mana by magicians in his previous life, Hiro's power was limited but he managed to be the sage because of his mana heart.

Hiro's mana heart in his current world is also the same as his previous life but without the limitation of mana being use in this world, Hiro is the only one who could channel and use the mana to summon spells and magic.

With his special mana heart and an abundance of mana in the air of this world, Hiro could use magic as if he has unlimited or infinite mana.