Even though I liked it first...Karami Zakari, the pioneering and monumental original work of BSS works. Takanari Yamagishi was interested in Riho Iida, one of the group of four close friends. A girl in the midst of adolescence who just wishes for love to come true. Takashi Yoshino is Takanari's best friend. She's happy and has a lot of sexual desire. He is especially close to Tomino Niiyama, with whom he gets excited, and the two are also members of a close group. Niiyama took advantage of Takashi's curiosity, who has a strong sexual desire, and the wheels began to turn. The beginning of sex happens in Takashi's room. An unstoppable feeling. The scene of Takashi and Niiyama having sex unfolds in front of Takanari and Iida. The two of them could only watch in silence, but when the matter was over, Takashi called out to Iida... There's no way Iida would accept it just out of curiosity...I'm sure he'll stop at some point...