https://www.cmoa.jp/title/286978/

First official anthology of the popular manga Axis Powers Hetalia

The young lady Lina originally comes from the wealthy count Randall’s family line. However, because of the bad weather that resulted in bad crops and because of her good-natured father, the family ended up being severely swindled. She quickly fell and became a poverty-stricken young lady. But then one day, Lina is forced to participate in the evening party to decide the fiancée of the third prince Gilberto... Since she stuck out like a sore thumb she decided to leave after she got a glance of the prince, but... What is that dazzling light behind the cheers of joy the young ladies are making...?! (Source: Kadokawa, translated)

The strongest mage in the world is taking up a new hobby. He will train his apprentice in an unorthodox way… She's so cute that instead of being a strict master, he acts more like a doting parent instead! They will enroll in the magic academy together! All for the sake of guiding his apprentice — a free-wheeling life at the academy is about to begin! (Source: Fantasia Bunko, translated)

https://www.cmoa.jp/title/318318/

The new guy at Yuzuka's part-time job is Kurosawa-kun, a boy her age who goes to an all-boys school. She feels like he's staring at her all the time, but when she tries to talk to him, he gets very shy. "Maybe he likes me...?" When she looks at him more closely, she notices that he's actually quite handsome and just her type.... Oh no, the realization is making her blush self-consciously!　 When she boldly asks Kurosawa-kun about his feelings, he denies everything, saying "I don't even like you, don't be conceited...!" A girl from a co-ed school meets a boy from an all-boys school who is not used to girls. The boy's shy face makes her want to squeal... as she gets swept away by his tsundere act! A real youthful love story! (Source: Betsufure, translated)

Vertical (Tateyomi / タテヨミ) Edition

"Honestly, what a troublesome bride." The strongest prince guides a solitary witch to become his bride—a classic academy fantasy beginning with a political marriage! Will, the apathetic prince—poor at magic and on the verge of failing his classes—is forced into a political marriage by royal decree. His bride is Lilishuka, the "Ice Witch," a famous sorceress from the land of witches, known for her icy beauty—but… "If you do anything funny, I'll freeze you solid." She unleashes powerful magic in class, and her dancing and manners are disastrous—far from fitting for a royal bride! With their engagement on the line, Will tries to set an example as a member of the royal family—but then assassins targeting the witch appear… "Honestly, what a troublesome fiancée." Faced with his bride's peril, the apathetic prince reveals his true strength—a classic academy fantasy that begins with a political marriage!!