Shokuba no Onnanoko ni Toushisuru Hanashi

Hatamoto Ikuto, the manager of the local bookstore "Book Forest ", is an otaku who can't resist spending money on his favorite characters in games. Todoroki Miran, the part-time leader, looks up to him but can't understand his obsession with spending on in-game things. When Ikuto claims, "For me, spending money is an investment", Miran teases, "If that's the case, how about you invest in me...?" As the two navigate a cycle of investment and returns, the distance between their hearts begins to shrink.

(Source: Mechacomic, translated)

Note: Originally self published on the mangaka's twitter, the series was later picked up and officially released by Amukomi as of October 8, 2024.