Here is a Disastrous Life of Saiki K. copy-bon doujinshi with the pairing of Reita x Aren that I got from Suruga-ya. This isn't my favorite pairing out there but I like to buy copy-bon doujinshi of series that I like whenever I see them. This doujinshi is pretty short at just 16 pages. Reita and Aren mostly talk to each other with it ending with Aren blushing. There is no kiss in this doujin but the interactions together are still cute. The art is good as well. Hope everyone enjoys!
https://www.mediafire.com/file/lft6xt1bw1yoiec/%2528Karedake%2529%25E3%2580%2590%25E3%2582%25B3%25E3%2583%2594%25E3%2583%25BC%25E8%25AA%258C%25E3%2580%2591_Aren_Kuboyasu%2527s_Melancholy_%2528The_Disastrous_Life_of_Saiki_K.%2529.zip/file