The story of an otaku girl named Yuuko and her struggle as she fights solo against her handsome, normie brother who has gynophobia (with everyone except his sister). The original web novel from which this is based has an r-18 sequel that takes place when the protagonist is 27 years old and the brother is a doting yandere.

Lulu is a student of a magic school, but is actually a trouble student. Because of her poor magic skills and continual troubles, she was forced to transfer to a different school. She happily joined the new school, but soon discovered a shocking fact... She doesn't have an attribute as a magical girl! If she can't find her attribute before she graduates, her magic power will need to be sealed... Well, will she be able to find it...?

Cute, pleasant, profound... "Mansion" with cat manga and illustrations. (Source: Kodansha, translated)

Treasure Hunters - Adventurers who search for buried treasure scattered around the world. In Shinjuku, Tokyo, a young man appears as a transfer student at Kamiyoshi Academy. While he seems like a normal student, he is actually a treasure hunter. His mission is to discover a mysterious ruin hidden deep beneath the school. Accompanied by his new friends from school, he sets out to discover the mysteries of a super ancient civilization. However, numerous traps, monsters called "Kehito" that lurk within the ruins, and the clutches of the "student council" stand in his way! (Source: Arc System Works)