Mitsumei: Onegai♥Daniel Gaiden  

I-404, 蜜命 -お願い♥ダニエル外伝-

In 1944, Daniel was recently enlisted on Japan's flagship submarine, the I-404. Despite being new to the crew and a man among all females, he is eager to contribute. What role could be more fitting for a shota-esque male lead amidst battle-hardened women?