Director:
Cast:
Atsushi is only a fifth-grade elementary school student / but he is 1.80 meters tall and looks very stable and mature. Atsumi has already entered the second grade of high school / but she is a cute girl who is only 1.37 meters tall. When walking outside / Atsushi and Atsumi are often mistaken for brother and sister / and their height and appearance often cause a lot of jokes. In fact / it is the petite Atsumi who has been protecting and taking care of Atsushi. Saya (voiced by Aya Hirano) who mistook Atsushi for a high school student and has a crush on him / the innocent and innocent class teacher Futami Moriyama (voiced by Tomoe Tamiya) / and the classmate Kohin (voiced by Aya Uchida) who Atsushi has a crush on / are these friends who surround Atsushi and Atsumi and lend a helping hand when they need help most.
宫川敦志（置鲇龙太郎 配音）和宫川敦美（钉宫理惠 配音）是情同手足的兄妹，两人之间的感情十分深厚。敦志只是一个小学五年级的学生，却拥有着一米八零的大高个，看起来十分稳健成熟。而敦美已经升入了高中二年级，却是个身高只有一米三七的萌妹子。 走在外面，敦志和敦美常常会被误认为是兄妹，两人的身高和样貌亦常常闹出不少的笑话，实际上，是娇小的敦美一直在保护和照顾的敦志。将敦志误以为是高中生而暗恋着他的沙夜（平
