あつまれ!ふしぎ研究部 (Series) favorite_border

[DeepL Translation - needs review] Introduction to Volume 1: Daisuke, an ordinary high school student, joins a club where three girls study "mysteries"...?　The girls are hypnotized to see naked people, catch pigeons for magic, wear cursed masks, and other slightly enviable hardships ensue.... A slapstick, heartwarming, and sometimes erotic "mysterious" comedy!

(Translator: DeepL)