Sono Hi Uchu Wa Chikyu O Shiru Vol. 2

Lutella Luttatan is a brilliant space alien psychologist. In an attempt to save the sun from crisis, he pretends to be a handsome high school student and researches love. Unable to experience the feeling himself, though, he ends up constantly saying and doing the wrong things at the wrong time. His goal, though, is to go “all the way!” Prepare yourself for his ridiculous adventures in this raunchy sci-fi manga by Koki Nakajima.
At long last, alien psychologist Lutella has pulled off a proper confession, and it’s time for his first date! He put together ordinary plans to visit a cafe, go shopping, and check out an arcade, but… Meanwhile, a certain someone seeks to sabotage their romance! It seems that a child and the daughter of the Octopus Planet is transferring to school, as well, with the goal of destroying the Jellyfish Planet!
Notice: This manga is written in Japanese.