I'm Scattering IQ to the Protagonist - Volume 1 _2_3_Chapter 31

Intelligence without ambition is like a bird without wings.

Arthur Reynolds lived as a quiet, compassionate soul who loved to read and workout in his spare time, sacrificed himself to save his family, trading his own life for theirs.In death, his journey was far from over. Reborn into the mystical world of Sylvara as Raegar Blackwood, he discovers a land teeming with Aether, prestigious magic academies, perilous dungeons, and fearsome monsters.Join Raegar as he learns how to harnass his Fusion Magic to become a legend in the making. Witness him conquer dungeons, win tournements and become the strongest.

In regards to the MMORPG Cross Reverie, Sakamoto Takuma boasted an overwhelming strength that was enough for him to be called the Demon King by the other players. One day, he gets summoned to another world with his appearance in the game. There, there are two people that insist “I am the real summon master.” Takuma gets slave-turning magic used for summoned beasts cast on him by the girls –

Transmigrated to the world of Demon Slayer, only to become a swordsmith?“Then I'll forge the strongest Nichirin Blade!”With each hammer strike against the iron ingot, a notification appeared...[Impurities -1]After a hundred refinements, another notification...[Constitution +1]Upon completing the weapon, a final notification...[Current Weapon Sharpness Level: 1][Forgemaster: Strength +10, Constitution +10, Agility +10, Speed +10][Reward: Sun Breathing Technique!]“Maybe... I should become the strongest swordsman after all?”