About the Hero Life of Self Proclaimed Mediocre Demon Manga Volume 7

He may look like nothing but a country boy, but Chrono Alcon is actually one of the most powerful demons the world has ever seen! All he's interested in is attending school like any other kid, but when the Demon King finds out about Chrono's power, he'll have to spend his days studying, and his nights in the dungeons, fighting monsters...?! The hit fantasy adventure manga comes to print, perfect for fans of Goblin Slayer, The Rising of the Shield Hero, and That Time I Got Reincarnated as a Slime!The search for items to release Chrono's domination contract continues in the eleventh Demon King's dungeon, located at the bottom of the ocean. Chrono's group manages to secure an important treasure, but soon find themselves in tentacular trouble! A kraken with the ability to perfectly camouflage itself attacks, intent on keeping the treasure out of Chrono's hands. Underwater and blind to his enemy, Chrono will need to rely on more than his enormous strength, but what else does he have?!