Kirioka Taiki

The protagonist of this work. Taiki lives in the abandoned dormitory of Kirigaoka Gakuin with his sister-in-law Chitose, and has lived a carefree life after graduating from high school. He has a lethargic and reluctant personality, he lost the memory of his real parents when he was young. He was later taken in by the Kirioka clan as his adoptive family.