Ciao, My Darling

Anthology of 3 stories. 1) Ciao, My Darling - Shishimoto, a computer wizard by profession, rescues Tomosaka and his cat Hana from the streets. Shishimoto appears to have everything under control, in stark contrast to Tomosaka, who struggles to keep a job for any significant duration. However, not all is as perfect as it seems behind Shishimoto's tough exterior. Over time, Tomosaka uncovers Shishimoto's vulnerabilities and grows to care deeply for him. But when Tomosaka inadvertently causes Shishimoto to lose substantial work by unplugging the computer at an inconvenient moment in an attempt to save electricity (note: the mangaka lacks understanding of computers), Shishimoto has to call on his female friend Mika for assistance. This leads Tomosaka to confess his love for Shishimoto. Unfortunately, Shishimoto does not respond positively to this confession. (Source: Manga Updates)