Ryuunosuke is the resident of room 102. Ryūnosuke is a second-year student of Suiko. He is a hikikomori who rarely leaves his room, and usually communicates with others with cellphone message or -mails. To reduce the need to communicate with others, he has written the "Maid" program. He is an expert of computer programming, and contributes lots of useful advice and information to Sorata for the latter's computer game. He has gynophobia, and will even faint when girls touch him, which becomes even worse after Rita, Mashiro's roommate and handler in England, falls in love with him and kisses him on the cheek.
Voiced by: Yui Horie
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