Hai to Gensou no Grimgar: Furoagari no Kabe ni Kaketa Seishun - One More Centimeter
English title: Grimgar: Staking Our Youths on the Bath Wall - One More Centimeter
Japanese title: 灰と幻想のグリムガル 「風呂上りの壁にかけた青春―one more センチメートル」
Type: Special
Episodes: 1
Source: Light novel
Genres: Comedy
Studios: A-1 Pictures
Duration: 11 min
Rating: PG-13 - Teens 13 or older

Special episode that will expand on the ending of episode 2 where the boys try to spy on the girls bathing.